Dave Schiller in March 2021 found answers at the DG BBS to his Suhl proofed 20 GA 147 that is virtually identical to my
recently obtained 20 GA 3 in chambered Merkel SXS. Except that the manuf. dates are a different type number/letter code. My nitro V proof Suhl stamping
is also identical.
If my Merkel is stamped 10 KE between the proof marks, when was it made? Maybe October of ??? (also between the barrels underside, between the ejectors and lug are numbers 4512. Barrel #s, as they are not SN- related to the shotgun SN ?).

Thanks in advance

Lt Col Ridge Marriott