Hard to tell from the example I showed since only 20 and only a few 12g guns are listed.
I just checked my photos of the other page from that same book and it is the same deal. All 20g guns with only two 12g labeled the same way. As 2-3/8 frame size.
They were making a lot of 0 frame 20s that week.
In the days of hand written frame sizes in actual frame size columns (around 1928), I was able to confirm in the research for my article on the Hayes Prototype Trojan that sizes written as 1/2 were actually 1-1/2. But this earlier frame size oddity does not make much sense at all.
Chuck,
Are you able to maybe take a tally of what you see by way of those fractional number markings and how they correlate to the bore size. However, we are talking about 1881 as compared to 1913. So no doubt there may have been some differences.
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B. Dudley
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