large B found in prefixes BBA-BBP and BBX
small B found in prefixes BBP-BBZ and BBX
55b T/C BBP large B unc 65
55b T/C BBP small B unc 65
BBX large B unc 25
BBX small B unc 30
reg BBB unc 14
BGA-BGZ 2 small B's unc 14
BGA-BGZ one small B, one large B unc 50
BGA-BGZ two large B's 100 unc
Dredge hopes this helps. From 19th edition
FRIEDSQUID