Hello, concerning the little anchor engraved on your nazi FN Browning M.1910-22, it remembers me some pistols seen in a french military navy museum that I visited a year ago at Brest (France). French “Marine Nationale” used large numbers of FN 1910-22 Cal .32 ACP before and after WW II. These ones beared a nice engraved anchor on the top or the side of the slide and were bought directly to the FN plant. What I discovered in this little firearms museum was that a large number of german pistols were captured and brought back in service after WW II in the French navy (ruined after the war). Knowing personnaly the keeper of this fascinating little museum, I had the opportunity to examine numerous nazis FN 1910-22 models with wooden grips and “WaA 140” stamps with various Sauer 38H (of the very last war models) and germans Browning GP 35 among others models. All that guns were in service till the adoption of the MAC Modèle 1950 Cal. 9 mm Lüger, with a wide variety of pistols and revolvers. I’m afraid I didn’t examine these models too carefully to discover a little anchor on the triggerguard but our navy used to engrave anchors in all her weapons (Revolvers M.1873, 1874 & 1892 for example) until now and I would be surprised that the captured nazis pistols would be an exception to the rule.
I hope it could help you, I don’t know if your anchor is a french navy one but it resembles to and I think that the use of various nazis pistols in the “Marine Nationale” could interest some folks of this fascinating website. Congratulations for the webmaster!
P.S.: Sorry for the faults, I have only a poor scholastic english speaking…