http://s635.photobucket.com/albums/uu78/malcolmsfrejus/
Here's a link to pic's of mine - I had it repainted/decaled and the fork repaired, that's why it looks new.
The frame details are identical to the OP's bike down to the seat cluster with collar but no "window". There's one on CR that doesn't have the window also but the cluster is chromed. Mine is, as best I can guess, early to mid 60's, based on the CR Serial # list and the fact that the receipt is dated 1966.
Tha main difference is the components, mainly stem and brake calipers - mine had Balilla center pulls.
My decal scheme was also slightly different - DT panel and had/has more bands on seat tube.
The original "Mod. Tour De France" sticker on the down tube had no date, the replacement has 1950.
Also the headbadge is the same.
I had Jack at Franklin Frames do the work and he said that it will be a great riding bike but it's nothing really valuable except to you. TDF's were always at least their second tier bike behind the Super Course or maybe it's Professional and at some point later in their history started coming with Huret der's and Nervar cranks.