Heres a KVK l that has the fluted screwback, but different than the fakes. I got it in a lot I found some time back...I know they say these were used on originals, but more often found with the other style than this one. there is no post on the 12 oclock arm, but not sure if they were ever made without? comments?
These were with the KVK and also a luft buckle also shown below.
These were with the KVK and also a luft buckle also shown below.
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