further to the above, the first 20ga. Parker, 4634, is on a 1 frame. The 0 frame had not yet been made, and I don't know what the first 20 on an 0 frame is. I believe 5410 is the 2nd, and 6999 is the third, though in the serialization book, it is listed as a 30" 10gauge.
I believe 10165 is the 4th 20, and that is also on a 00 frame.
I am not sure calling these early, very small framed 20 gauge guns 00 framed guns is correct, in that no 0 frame gun predates them, but the dimensions are within a few thous of what is listed in TPS as 00.
15837 and 15838 are the 5th and 6th 20s, and it is likely that these are on the 0 frame, as the first 16ga lifters were right in this neighborhood.
The enclosed pictures are of the barrel of 6999, which the Research Chairman has confirmed is in the order book as a 20ga.
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