Hi Louis,
I took a quick look at the WP military museum website and cant tell which vehicle they have. However, I suspect it is an FT 17 because the armament appears to be an 8mm Hotchkiss MG but I cant tell for sure since the picture is so small and they dont say specificly which vehicle it is. I do have some friends that went there and can see if they know if you want.
From what I know the French supplied the AEF with 520+/- vehicles. We had to pay for them so it is logical that we would bring the surviving vehicles home. Eventhough we didnt do a lot with Armor during the interwar years we still had a few units that were designated as Infantry Tank Battalions and had to continue training until the FT 17 was rendered obsolete by technology. I found some numbers for the M1917, there were 64 completed with 10 actually delivered to France before the war ended. The vehicle was further modified and a 6ton version was developed of which 950 were delivered to the Army and were used as the standard vehicle until 1931 when it was retired. However we sent 329 to Canada as part of the 1940 lend lease Act and the Canadians used them as training vehicles not sure who got the better end of that deal.
Well I hope this is helpful.
All the best
Dave