These are what came with the drum I purchased. The complete knobby on the left came off the floor tom. All 3 are the same. The partial knobby came on the bass drum. Swivo-matic hardware,when introduced, came with hex only is what I gather.There were round legs in the 50s I believe,maybe early 60s. There was a pair on ebay yesterday. When I removed these knobbys off the floor tom,I could seethat they were never removed before. The star washer marks are original. Meaning only one dent per star,if ya get what I mean. Anybody want to guess whats going on? Hex legs fit but again the knobby is round on both sides.
Any info on this would be appreciated.
Thanks,Ed