The etched mark looks kind of right for modern Sabino. Moulds did get moved between companies.
I have a modern Butterfly, with a hand written mark on - somewhere.
I'm currently looking for it to check!
It was upstairs. The writing is very similar indeed, although some letters are shaped a little diffrently, and mine has France under it too. I bought it new, in Amsterdam, in the early '00s.
But I still would not rule it out. It looks too much like an official Sabino mark. Surely a fake wouldn't be that good.

It does not look like dremmel marks. It looks properly done.