Salut, voici ce que j'ai trouvé, si ça peut te servir
A+ TokensTime.
World Exonumia 2006 Mail Bid Sale of EXONUMIA:
Tokens, medals, Counterstamps, Historical Americana,
Slave Tags, Indian Peace medals and more!
Closing Date: 7 November 2006 part I
Lot 422. (Quebec): IB. Quite a few American colonial coins, US large cents, Canadian tokens and other coppers were stamped 'I.B' by an unidentified Quebec merchant. There is a good chance that the issuer could be identified by searching old newspapers and other historical records. A few of these coins also have numerals. This is one of the scarce numeral varieties. "I.B/3", very bold XF mark on cull 1809 US Half Cent, date clear. $75.00-85.00+