Drew, the picture I posted is a 12 gauge. For some reason they stamped 12's also. Kind of funny since 12 gauge "elsies" were always 2 3/4"

In that transition period for the 20 gauge 2 1/2" to 2 3/4" I have seen them stamped to let people know that the chambers were lengthened. The same for the 16 gauge in late 1939.


David