Definitely has the appearance of a Super Mistral with Prugnat I lugs and fully sloping fork crown. Doesn't appear to have any features of a Putney shop build - must be a factory build. Straight rear brake bridge did not appear until '73ish. Might be helpful, if you have a set of calipers to measure upper seat stay diameter which measured 5/8 from onset until '67 when went to 9/16 until again in mid 70's went back to 5/8. Looks thinner to me. Metal badge didn't disappear from catalog until after '76 altho as before unusual 3 digit number might mean it was a special build for badging by another shop. Looks like repainted at sometime as the factory would not have placed a seat tube decal on head tube.

So by features I would guess somewhere around '73. Wonder about seat stay measurement?

Hope this helps.

Doug