Thank you for your generous offer to help me out.

Here's what I think I have:

"Francotte SxS 20ga Boxlock, good wood, 50%+ engraving coverage. Overall 80%+."
"Blued action; 27 1/2" barrels, current choking ic/m, barrels moderately pitted near muzzle, but pattern well; single trigger; half pistol grip stock, 15 1/4" LOP, 2 3/4" drop, factory-added stock extension and hard rubber pad, tiny registration cartouche on stock reportedly from WWII occupation; splinter forearm with gold initials. Matching numbers, 253xx Seriel # may place it as 1895/6 Medium Grade gun."