I believe what you have here is a post WWII MAB model D type II in 7.65mm (.32acp) with aftermarket faux wood RH thumbrest target grips. most factory grips had the MAB logo embossed and were not handed.
they are close imitations of the Browning model 1910/22 and were used extensively by French police and military. from your pictures, yours does not appear to have import markings which is a bonus for purists and collectors.
they have a good reputation for reliability and some parts, magazines, grips, etc. seem to be available online where service might be needed.
neat guns and great little piece of foreign history. please verify anything I've added, I'm just going by your pictures and a couple quick pokes at the interwebs to refresh my memory.
hope that helps and good luck with your sale!