Fresh from
ebay:
I bid on this CDV (Carte de Visite) primarily because of the photographer and cancel, although military subject matter on CDVs is always in demand.
A. K. Josselyn was a photographer stationed at Gallop's Island, Mass.
Gallop's Island is an island in the Boston Harbor, now uninhabited. During the Civil War it was the home of a military training and mustering out camp housing 3,000 Union soldiers.
I felt it was a fairly unique location with respect to handstamped cancels.
The reason that the cancel is not tied to the CDV is that photographer cancels were almost universally precanceled. Photographers would stack their CDVs, and if the cancel were fresh, the wet ink would offset onto the next CDV. That is why, unlike with covers, the lack of the cancel being tied is NOT an indicator of the usage being nonauthentic.

