...one of my current project bikes is a Follis that resembles very much the one you've posted.
Mine is one of the three tubes butted frames, which was second in the lineup, down from the top.

It came with the same somewhat ugly stem, and the same Nervar crank. If you look at the Follis history page, I think it's the Model 172 (scroll down to the 1970's catalog pages.)

The paint was a little better on mine, but the foil stickers were faded and damaged. I bought the seat tube sticker from Velocals (link), and did a little touchup on the silver paint. If i were redoing your bike, I'd just strip and repaint the whole thing, with all new stickers. Silver is one of those colors that can be difficult to match, because there are so many versions of it.