Take a look at these and tell me what you think. I picked up these Giro D'Italias at a bike swap this fall because they were cheap and I had never seen anything like them. They are an aluminum bar but they don't have the classic Cinelli "sleeve" around the clamp area: Instead they are enlarged in that area like the early Cinelli steel bars (Mod. 17D?) The clamp area measurements vary from 25.7mm to 26mm. They are very worn. I can find no numbering or lettering on the ends of the bars.

I have three theories but am just grasping at straws.
1. They were a transition bar made at the same time as the steel bars or soon thereafter before Cinelli went to the "sleeve."
2. Cinelli made these bars to fit the 26.0 TTT stems at a time when the regular Cinelli bars were 26.4mm.
3. They're very clever fakes.

Anyone care to educate me on these?

Brent