My hunch is it's a "Best" gun and may be valued above $8000.00
I haven't seen many Francotte's nicer than that. Oh I have, but not many. I've seen many a knotch below that more like 5-8K guns.
But that just looks extra fine to me. Absolutley gorgeous and the wood to netal fit is awesome. Please let me know what you find out. I will try and get some time to help.