| Abbreviation | Definition |
|---|---|
| B# | Browning Number |
| BB | Bellissimo (Italian coin grade equivalent to Very Fine) |
| BB | Bread & Butter |
| BB# | Bowers and Borckardt Number |
| BC | Bien Conserve (French coin grade equivalent to Almost Good) |
| BCH | Bitcoin Cash |
| BECC | Boeing Employees Coin Club |
| BG# | Breen and Gillio Number |
| BITC | Bitcoin |
| BLMO | BLMO Coin |
| BLMOBILE | Blockchain MobileBLMO Coin |
| BLMONEY | BLMO Coin |
| BLMOO | BLMO Coin |
| BNS | British Numismatic Society |
| BPS/GPB | British Pound Sterling, aka GBP |
| BTC | Beta Test Coin |
| BU | Bright Uncirculated |
| BU | Brilliant Uncirculated |
| BV | Bullion Value |
| C | Charlotte, North Carolina (mint mark on early United States gold coins) |