Thanks again. I see the coincidence on the mm measurement now as a 12 bore would be marked 18.5.

I am positive on the serifed "N L" letters. In light of this, the mark that looks like an "H" is very unusual. It looks more like an object than a letter, as the inward-pointing portons of the serif have been removed, leaving only the outward-pointing ones. Note there is also a "V" o the same size font as the "H".

The 'keepers' are rectangular, but fit into a V-shaped recess on the barrels.

Now I can casually mention to my buddy that the gun is a "Belgian Lefaucheux" and really impress him.


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