hello,,i'm sorry i ddin't see your first post with the markings on it listed,,i read your second part and it seemed like alot we get without much information included ,,the francotti helps ,,you mentioned crowns ,,are ther any letter under them ,,possibly take the forarm off and look under the barrels for crowns with possibly AF under them ..also look for "Francotte choke bore" under the barrels,,these markings should be there if it's a francotte shotgun ..from the refrence i'm getting in my books ,,francotte shotguns were special made and engraved to customer specs,,and from the ornate engraving and inlays yours has it's a good chance this may have been who made it,,but the proofs and markings must be correct,,these shotguns can be pretty pricy and a 1 of a kind item as such would be very difficult to actually value ,,because they were custom order only and they didn't make model number guns ,,prices in my book are very high and about good would range from 5000-6200,,and perfect could be as high as 15000+,,but the appeal would be to someone looking for a very unusual shotgun for a collection thats not your ordinary run of the mill factory made shotgun,,post a pic here if ya can to let other members see it,,just hit the tab in the reply box marked attach an image and find it on your computer and double click it then hit submit..i'd like to see the monkey with the ruby eyes ..

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pretty cool ..
bigcurt