And what about Romani? Symbol on lugs od similar, dropouts as well.
https://steel-vintage.com/products/romani-frameset
I was also thinking about Belgium. I found similar looking bikes from Venturelli, Gironelli and Ampelia but it looks like it's impossible to identify.
It's a close one but unfortunately this symbol on lugs is much smaller on mine.I just dug up a few pictures of a Venturelli I once owned, and there are similarities:
You were right, it's Belgium manufacture called Minerva. Probably Columbus aelle tubing.I just dug up a few pictures of a Venturelli I once owned, and there are similarities: