I traded my '64 Bottecchia conversion for this frame at the shop. They had no idea who made it, but they had it on display on the wall, and I think they were asking $500 or so for it. They said it was from the late 70's or 80's.






Can anyone tell me anything about this frame? Any guesses? My friends guessed that it was a home build because of the random numbers and letters on the lugs and dropouts.

Here are some examples of letters and numbers on the lugs:
Either an "O" or a "C"
"2"
Dropout with "A1258"


Some more pictures:
Head Tube
BB Shell
Headset


Any suggestions would be appreciated!