Thanks for taking on this project.
Here's my one owner 1978 TC, purchased April 1979. Huret dropouts match the 1978 catalog specs. 1978 date code on RD. Original downtube decals were removed; what you see are replacements. Top tube lettering is hand-painted, as is "Made in France" on NDS chainstay.
BB and fork are both French.
Numbers on BB are 4368575; 050. As you can see in the last photo, in the second number the first digit looks like a zero; the third, a lower case o.

