Thanks for all of the encouragement and great recommendations. The seller provided some additional information to the questions raised in this thread:

"The green portion looks professional, the fork and the dropouts were probably painted later and not quite as well on close inspection. The fork is french-threaded and original. I had wheels on it and checked the alignment as carefully as I could and seems straight & true."

I'll be picking the frame up next weekend, and will begin scouring the boards for interesting French components right away. Stay tuned! Many thanks again.