Hello there everyone. I'm quite new to this forum, but I need some help to identify this old frame i've got.

The frame formerly belonged to my french grandfather which was a 'bicyclette' fanatic. It was later chromed by my father in the 80's, but now ofcourse I can't identify it.
I have made some pictures of some frame numbers and details. Maybe someone here can help me out ?

It was fitted with Simplex Tour de France 50's parts, maybe this helps.

Thanks for helping!

Arnaud
Holland