Philippe Gysen Collection
(Offline. Hopefully, we will be able to restore it.)

Christophe Oliva: Searchable database of Probus antoniniani

Christophe Oliva: Les Monnaies de Probus blog

Divo Probo: Monedas De Marco Aurelio Probo blog

Probus at Tesorillo.com: Probo

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Jérôme Mairat: Le monnayage de Probus available through iNumis (en français)

Barnaba Skibniewski: Mennictwo Probusa a talk at the Toruń Antique Numismatic Workshop (in Polish)

Doug Smith: Silvered Antoniniani of Probus

Doug Smith: An Antoninianus of Probus: An Exercise In Looking Closely

Doug Smith: EQVITI Coins of Probus

Zach J. Beasley: Antoniniani of Probus

Dave Surber, Dane Kurth & alia: Probus in the WildWinds database

Perseus Digital Library: Coins of Probus in the Boston Museum of Fine Arts

Scriptores Historiae Augustae THE LIFE OF PROBUS (in English)

Scriptores Historiae Augustae: FLAVI VOPISCI SYRACVSII PROBVS (en français)

Avtory Zhizhneopisanii Avgustov FLAVIJ VOPISK SYRAKUZYANIN PROB (in Russian)

The Breviarium of Eutropius [IX, 17] PROBVS (in Latin)

Edward Gibbon: Probus from "The History of the Decline and Fall of the Roman Empire"

De Imperatoribus Romanis: PROBVS

Roman Empire Net Probus (extinct link)

Numismatic catalogues & periodicals links at issuu