I have seen a racer for sale in BKK, for 2500 Baht, in a scrap yard. It is a bit of a hybrid, but the frame is apparently branded Vicini:
However, the logo doesn't match that which I found on the web. This is the logo, on the bicycle that I found:
Does anyone know if this is a good brand, and whether I have found a dusty nugget of treasure, or is it just a no-brand fake clone? I have googled for Vincent branded bicycles and not come up with all that much.
Additional photos and info
FWIW, the rear derailleur mechanism is a Exage 300EX, the gear shifts are Shimano (although the photo is unfocused unfortunately), and the rear brake cable is threaded in-frame inside the top horizontal tube:
The logo can also be seen on the seat tube: