- Adana Museum
- Afyon Museum, Turkey
- American Numismatic Society, Bell collection
- Antioch Museum
- Archaeological collection of the Rotonda, Thessaloniki
- Archaeological depot of the Ukranian Academy, Kiev
- Archaeological Institute of Bucharest, Romania
- Archaeological Museum of Hisarya, Bulgaria
- Archaeological Museum of Sozopol, Bulgaria
- Archaeological Museum of Varna, Bulgaria
- Archaeological Museum, Asenovgrad
- Archaeological Museum, Nessebar
- Archaeological Museum, Plovdiv
- Archaeology Museum of Thessaloniki: collection of Michael Ritsos
- Archeological Institute and Museum of Veliko Turnovo, Bulgaria
- Architectual Institute of the Ukranian Academy, Kiev
- Archives départmentales, Nord
- Archives of Cava de’ Tirreni
- Archives of the Order of St John of Jerusalem, Malta
- Arta, archaeological collection
- Ashmolean Museum, Oxford
- Athens, Benaki Museum
- Athens, Nomismatikon Mouseion, Main collection
- Athens, Nomismatikon Mouseion, Orphanides collection (ed. Koltsida-Makri)
- Athens, Nomismatikon Mouseion, recent collections
- Athens, Nomismatikon Mouseion, Stamoules collection
- Bari, archives of the church of San Nicola
- Belgrade, National Museum
- Berlin collections (edd. Speck and Sode)
- Better collection
- Bibliothèque nationale de France, Cabinet des Médailles, Zacos collection
- Birmingham, Barber Institute
- Bochum, Schiffer collection
- Brussels, Kimps collection
- Bucharest, Becker collection (dispersed ?)
- Bucharest, Orghidan collection
- Bucharest, Paphagi collection (dispersed ?)
- Budapest, Magyar Nemzeti Múzeum
- Bulgaria (private collection)
- Bulgarian National Museum of History, Sofia
- Cambridge, Ma. Sackler Library, Harvard University
- Cambridge, Mass., Fogg Art Museum
- Collection of Dr D. Theodorides, Munich
- Collection of Mrs Janet Zacos, Basel
- Collection of O’Hara, UK
- Collection of S. Lambros
- Collection of V. Bulgakova, Kiev
- Copenhagen
- Corinth Museum
- Cyprus (private collection)
- Dallegio collection, Athens
- Dançoisne collection (dispersed?)
- Diamanti collection (dispersed ?)
- Dorin collection, Sofia
- Earinos collection (from Smyrna)
- England (private collection)
- Étampes, Thierry collection
- F. Miklosich and J. Müller, Acta et diplomata graeca medii aevi sacra et profana, vols. I-VI, Vienna, 1860-1890
- Feuerardent collection, Paris
- France (private collection)
- Gaziantep Museum, Turkey
- Germany (private collection)
- Giannopoulos collection (dispersed)
- Gosudartsvennaja Tret’jakovskaja Galereja, Moscow
- Greece (private collection)
- Halmyros, Greece
- Haskovo Museum of History, Bulgaria
- Hatay Museum
- Historical and Architectural Museum, Novgorod
- Historical Museum of Ahtopol, Bulgaria
- Historical Museum of Balchik, Bulgaria
- Historical Museum of Burgas, Bulgaria
- Historical Museum of Gabrovo, Bulgaria
- Historical Museum of Iambol, Bulgaria
- Historical Museum of Kazanluk, Bulgaria
- Historical Museum of Moscow
- Historical Museum of Nova Zagora, Bulgaria
- Historical Museum of Panagjurishte, Bulgaria
- Historical Museum of Pliska, Bulgaria
- Historical Museum of Romania, Bucharest
- Historical Museum of the City of Kiev
- Historical Museum of Veliko Turnovo, Bulgaria
- Historical Museum, Blagoevgrad
- Historical Museum, Russe
- Ikonenmuseum, Recklinghausen
- In Bulgaria, but in unknown collections
- In Germany, but in unknown collections,
- In Greece, but in unknown collections,
- In Romania, but in unknown collections
- In Russia, but in unknown collections
- In Serbia, but in unknown collections
- In Ukraine, but in unknown collections
- Institute and Museum of Archaeology, Sofia
- Istanbul (private collection)
- Istanbul Archaological Musum
- Istanbul, collection of Mr. Halus Perk
- Istanbul, Excavations at Saraçhane (Harrison)
- Italy (private collection)
- Jerusalem, Museum of the Flagellation
- Khoury collection (largely purchased around Antioch and in Lebanon)
- Laurent collection
- Lichacev collection
- Lindpainter collection (dispersed ?)
- London, British Library
- London, Museum of London
- Longuet collection, Mulhouse
- Lwow collections
- Macedonia (private collection)
- Malcove Collection, University of Toronto
- Military Museum of Bucharest
- Mordtmann collection
- Mt Athos, archives of Docheiariou
- Mt Athos, archives of Monastery of Iviron
- Mt Athos, Archives of the Monastery of Megiste Lavra
- Mt Athos, Archives of the Protaton
- Munich - Vienna collections (Seibt - Zarnitz)
- Munich, Utpadel collection
- Museum of Archaeology, Preslav
- Museum of Archaeology, Shumen
- Museum of Beirut
- Museum of Calarasi, Rumania
- Museum of Constanta, Rumania
- Museum of Cyprus, Nicosia
- Museum of History, Dobrich, Bulgaria
- Museum of History, Kardzhali (Bulgaria)
- Museum of History, Kurdjali, Bulgaria
- Museum of History, Kyustendil, Bulgaria
- Museum of History, Pernik, Bulgaria
- Museum of History, Radnevo, Bulgaria
- Museum of History, Silistra, Bulgaria
- Museum of History, Sliven, Bulgaria
- Museum of History, Stara Zagora
- Museum of History, Vidin, Bulgaria
- Museum of History, Yambol (Bulgaria)
- Museum of Komotini
- Museum of Manisa, Turkey
- Museum of Mytilene
- Museum of Odessa, Ukraine
- Museum of Pozarevac (near medieval Branicevo), Serbia
- Museum of Selcuk, Turkey
- Museum of Sremska Mitrovica
- Museum of Staraja Ladoga
- Museum of Tarsos
- Museum of the Chersonesos
- Museum of the Danube Delta, Tulcea, Romania
- Museum of the White Fathers (St Anne), Jerusalem
- National Ethnographic and Historical Museum, Perejaslavl'
- National Museum of Antiquities, Bucharest
- National Museum of Historical Numismatics, Moscow
- National Museum of History, Cernigov
- National Museum of Ukrainian History, Kiev
- National Museum Sofija Kievskaja in Kiev
- New York, American Numismatic Society, Bellinger Collection
- New York, American Numismatic Society, Mabbott Collection
- New York, American Numismatic Society, Newell Collection
- New York, American Numismatic Society, outside named collections
- Paris, Bibliotheque nationale
- Paris, de Koehne collection (dispersed ?)
- Paris, Institut Français d’études byzantines
- Paris, Musée du Louvre
- Paris, private collection of Kapamadji
- Paris, Sceaux byzantins de la collection Henri Seyrig
- Patmos, vol. 1
- Patmos, vol. 2
- Pomorie Museum of History, Bulgaria
- Pozzi collection, Paris (old and largely dispersed?)
- Private collection
- Private collection in Turkey
- Private collection of Dr. M-L Zarnitz
- Private collection: Basel, G. Zacos (largely dispersed)
- Private collection: Gustave Schlumberger (dispersed)
- Reggiani collection (Seibt)
- Regional Historical Museum, Shumen
- Romania (private collection)
- Russia (private collection)
- Sale Catalogue: Classical Numismatic Group 33 (March 1995)
- Sale Catalogue: Classical Numismatic Group 37 (March 1996)
- Sale Catalogue: Dorotheum 446 (April, 1990)
- Sale Catalogue: Elsen (Brussels) Sept. 2000
- Sale Catalogue: Gorny 62 (April 1993)
- Sale Catalogue: Gorny 84 (October, 1997)
- Sale Catalogue: Gorny 90
- Sale Catalogue: Gorny and Mosch 108, April, 2001 (see SBS 8, p. 223)
- Sale Catalogue: Gorny and Mosch 113 (October 2001)
- Sale Catalogue: Gorny and Mosch 118 (October 2002)
- Sale Catalogue: Hirsch 173 (1992)
- Sale Catalogue: Hirsch 175 (September, 1992)
- Sale Catalogue: Hirsch 177 (February, 1993)
- Sale Catalogue: Hirsch 183, 1994 (SBS 6, 126-127)
- Sale Catalogue: Hirsch 185, 1995 (SBS 6, 127-129)
- Sale Catalogue: Hirsch 186 (May, 1995)
- Sale Catalogue: Hirsch 194 (February, 1997)
- Sale Catalogue: Hirsch 206 (November, 1999)
- Sale Catalogue: Hirsch 212, November, 2000
- Sale Catalogue: Italo Vecchi 13 (London, September 1998)
- Sale Catalogue: Italo Vecchi 17 (London, December 1999)
- Sale Catalogue: Künker (Osnabrück) 20 (SBS 3, 188-190)
- Sale catalogue: Lanz 60 (Munich 1992), SBS 3, 191-192
- Sale catalogue: Lanz 62 (Munich 1992), SBS 6, 139-140
- Sale catalogue: Lanz 64 (Munich 1993), SBS 6, 140-141
- Sale Catalogue: M & M Numismatics (Washington, D.C.) 1 (December 1997)
- Sale Catalogue: Müller 65 (May, 1990: SBS 3, pp. 193-194)
- Sale Catalogue: Müller 73 (February, 1993: SBS 6, p. 144)
- Sale Catalogue: Münz Zentrum
- Sale Catalogue: Münz Zentrum 100, September 1999: see SBS 8, 243-244 (lot 818 contained 21 items)
- Sale Catalogue: Münz Zentrum 101, December, 1999 (see SBS 8, p. 245)
- Sale Catalogue: Münz Zentrum 109, January 2002
- Sale Catalogue: Münz Zentrum 65, 1988
- Sale Catalogue: Münz Zentrum 73, April, 1992
- Sale Catalogue: Münz Zentrum 75: April 1993
- Sale Catalogue: Münz Zentrum 76: November 1993. (Lot 1390 consists of 133 seals)
- Sale Catalogue: Münz Zentrum 77, April 1994 (SBS 6, p. 150)
- Sale Catalogue: Münz Zentrum 80, 1994
- Sale Catalogue: Münz Zentrum 81, March 1995 (SBS 6, p. 153-154)
- Sale Catalogue: Münz Zentrum 91 (September 1997)
- Sale Catalogue: Münz Zentrum 93, January 1998: see SBS 8, 235-236
- Sale Catalogue: Münz Zentrum 94, May, 1998 (see SBS 8, pp. 236-239)
- Sale Catalogue: Münz Zentrum 96, September, 1998 (see SBS 8, pp. 239-240)
- Sale Catalogue: Münz Zentrum 97 (January 1999)
- Sale Catalogue: Münz Zentrum 98, May, 1999 (see SBS 8, pp. 241-243)
- Sale Catalogue: Robert J. Myers (New York, March 1981)
- Sale catalogue: Schenk-Behrens 76 (November 1998), SBS 8, 249-250
- Sale catalogue: Schenk-Behrens 77 (May 1999), SBS 8, 250-251
- Sale Catalogue: Schulten (April 1989)
- Sale Catalogue: Spink 127 (1998)
- Sale Catalogue: Spink: May 25, 1999
- Sale Catalogue: Spink: October 6, 1999
- Sale Catalogue: Sternberg (Zurich, 1986)
- Sale Catalogue: Sternberg (Zurich, 1990), SBS 3, 203
- Sale Catalogue: Sternberg (Zurich, 1991), SBS 3, 203-206
- Sale Catalogue: Sternberg (Zurich, 1992), SBS 3, 206-207
- Sale catalogue: Sternberg 5 (Zurich, 1975)
- Seals edited by H.W. Bell
- Seals reported at excavations but of unknown current wherabouts
- Serbia (private collection)
- Sorlin-Dorigny collection
- St Petersburg, Hermitage
- St Petersburg, Hermitage, Department of Numismatics
- St Petersburg, Russian Academy, Institute for History
- Staatliche Münzsammlung München: Zarnitz collection
- Staatliche Museen zu Berlin, Stiftung Preußischer Kulturbesitz, Münzkabinett
- Temple Mount excavations, Jerusalem
- The Byzantine Museum of Athens
- The school collection of the village of Gabar, near Develt
- The seal has been reported lost
- Thessaloniki, Mouseio Byzantinou Politismou
- Ukraine (private collection)
- Unknown collection: details temporarily or permanently unavailable
- Unknown private collection: details temporarily or permanently unavailable
- USA (private collection)
- Vatican (Rome), Médailler Vatican
- Venice, College of the Mechitharist Fathers
- Vienna Sammlung des Schottenstiftes
- Vienna, College of the Mechitharist Fathers
- Vienna, Grünbart collection
- Vienna, Institut für Numismatik und Geldgeschichte der Universität Wien
- Vienna, Kunsthistorisches Museum, Münzkabinett
- Vienna, private collection of Prof. Herbert Hunger
- Vienna, private collection of Prof. Werner Seibt
- Walters Art Gallery, Baltimore
- Warsaw, National Museum
- Washington, Dumbarton Oaks Research Library and Collection: 47 series
- Washington, Dumbarton Oaks Research Library and Collection: 51.3.5
- Washington, Dumbarton Oaks Research Library and Collection: 55 series
- Washington, Dumbarton Oaks Research Library and Collection: 58 series
- Washington, Dumbarton Oaks Research Library and Collection: 70 series
- Washington, Dumbarton Oaks Research Library and Collection: 77 series
- Washington, Dumbarton Oaks Research Library and Collection: series and number unspecified
- Weber collection
Seals in Italy (private collection)
-
Leon Perenos, magistros and doux of all the West
Μήτηρ Θεοῦ. / Κύριε βοήθει Λέοντι μαγίστρῳ καὶ δουκὶ πάσης Δύσεως τῷ Περηνῷ
Mother of God. / Lord aid Leon Perenos magistros and doux of all the West
Italy (private collection)