1802/1 Draped Bust Silver Dollar. BB-231, B-1. Rarity-4. Narrow Date. VF Details--Cleaned (PCGS).Bowers-Borckardt 231 is one of the rarest die marriages of the 1802-dated silver dollar issue, similar to BB-233 and ranking not too far behind BB-235 and BB-242. Only 100 to 175 examples are believed extant in all grades, per Q. David Bowers (2013). BB Die State II.PCGS# 40090.From the Collection of Silas Stanley Roberts, 1888-1966.