Quote:
one would think that a "Specialized" catalog would give the two different stamps two different numbers - it gave the two 8.3 cent Ambulance bulk rate stamps different numbers ( 2128 and 2231 )!
There was specific reason for that. Scott 2128 was the regular coil stamp and was tagged with the legend "Ambulance 1860s" being 18.0 mm long; whereas Scott 2231 was the Bureau Precancel variety with the designation "Blk Rt./CAR-RT/SORT" and the legend "Ambulance 1860s" being 18.5 mm long.