tikka3006,
There were a few straight stock special order Superposed around that time period but the lion's share of Superposed were round knob/long tang.

The serial number indicates it is an early '51 as you stated. the serial number also would indicate it was not a special order gun and since all Superposed were long tangs in those days it should, in fact, be a round knob/long tang.

Additionally, you asked why you see so many that are full/full or similar. I've always thought that was odd too but Browning would create anything the customer wanted. I think some folks just wanted that configuration...you tend to see a lot of 12ga 3" mag in full over full...I think folks thought that would be the ultimate waterfowl gun. For Skeet shooters I see why having skeet/skeet would be desirable. I think the majority of the Superposed you find will be of two seperate chokes however.

Last edited by Deltamac; 08/26/09.