key

"I have just discovered your site and I allow myself to address a photograph of a key to you which I have to find dating in a house from the end of the 17 2nd century. Can you give me information on this key (16.5 cm). With my thanks, Cordially..."

Please don't post binary data to the newsgroup. Instead, please put the photograph on a web page somewhere and tell us its URI.

Since you're looking for historical information, I would suggest that you talk to lock collectors and museums, rather than locksmiths.

(Veuillez ne pas signaler les données binaires au newsgroup. Mettez au lieu de cela, svp la photographie sur une page Web quelque part et dites-nous son URI. Puisque vous recherchez l'information historique, je proposerais que vous parliez aux collecteurs et aux musées de serrure, plutôt que des serruriers. Bonne chance!)

Somebody babblefished it.

Good point. Although I thought maybe you knew a few words of French and got it that way.