Ha, great question. I was basing my opinion from recollection of a friend's bike, however an image search for 'Gios brake bridge' suggests that I'm 100% wrong not super knowledgeable about this stuff.
It is a bit of a mystery. If you Google Cinelli brake bridge you do get some similar examples. May be one of those bridges used on a some other frame? It was mentioned before that a 26.8 would fit, which could point to Aelle, but would be pretty hard to indentify without any markings.
Which Gios?