Can anyone assist to identify this Fifties Italian frame? It has a cambio corsa decal to signify the cambio corsa toothed rear drop outs for the twin lever changer.

I can discern the word "cicli" above the main logo on the head badge but not the main logo within the wreath. The first letter might begin with a "U" but not certain. Any advice would be much appreciated to positively identify this frame.

Pictures of all of the lug work would be most helpful.

Understood. I'll get some images of the lugs for posting soon.

Some additional images of the frame:

The general layout of the head decal is reminescent of Atala or a sister brand.

50's Cicli Moser's had the wreath and Cicli in the badge, that's what I think it is! Not to be confused with Francesco Moser another brand. (according to Velo Base)

[QUOTE=Marc F;15784221]Some additional images of the frame:

I'd say definitely Italian. Might be tough finding a Cambio Corsa derailleur system for those dropouts, though.

It looks to me like A. Camponovo was the company name, or possibly a model name. On the headbadge, I'm pretty sure it says Campagnolo, on that red ribbon thingy. Strange, but way cool.

[QUOTE=JohnDThompson;15784472]Maybe go with an internal geared hub or a claw derailleur. I haven't seen a serrated rear drop out before though. This will be a cool project to fix up.

The Cambio Corsa system used a rack and pinion arrangement on the rear axle and dropout to allow the wheel to move forward and back while shifting gears. This eliminated the need for a pulley cage, which at the time was thought produce an insufferable amount of friction because of the convolutions the chain had to undergo running through the pulleys:

the head emblem appears similar to that of Palma. making no claim it is such.

I don't know the specific brand but judging by the lugs it looks typical for a bike coming out of Torino in the 40s and 50s.

Also, cambio corsa gear comes up several times a year on ebay. Or ask. Probably a dealer or two with one for sale.

Thanks to everyone for the feedback and suggestions. I'll see if I can follow up on the leads and report if I find something conclusive.

[QUOTE=JohnDThompson;15785271]The Cambio Corsa system used a rack and pinion arrangement on the rear axle and dropout to allow the wheel to move forward and back while shifting gears. This eliminated the need for a pulley cage, which at the time was thought produce an insufferable amount of friction because of the convolutions the chain had to undergo running through the pulleys:

You need a better video… et voila! Here's one I shot earlier:

https://www.flickr.com/photos/22983673@N02/sets/72157632555390647/