Well, at least they have the "10" numeral in common- Jason, you will soon learn from the very informed brotherhood here on the PGCA Forum--you might be just a "tad outta whack" on that computation. .410 bore and 28 gauge original conditioned both Meriden and then Ilion mfg. Parkers- very scarce-
You should perhaps remember that in the 1880-1920 era the std. 10 was the main gauge, and especially in the first half of that time span, the 12 was considered to be a 'smaller upland only gauge"-- But join our PGCA, you'll get the magazine parker Pages, post more fotos and you'll get a fair appraisal here, and you can then offer it for sale. Best wishes--
