Greetings---
Andrei makes a good point. I agree that, because of the seat tube collar, the odds are definitely with Olmo. Those branded seat collars, and often matching branded headsets, were made by Magistroni and supplied to various Italian marques of the era (Olmo, Ideor, Girardengo, etc.).
But in the back of your head you should keep in your universe of possibilities the slight chance that somebody could have simply had an Olmo-branded collar hanging about and used it on a non-Olmo frame which was missing its own. That type of seat collar was typical for the era and I have seen them "swapped out" onto differently-branded bikes before. Their very nature makes them not all that difficult to lose, once you've loosened them to take out the seat post. I temporarily lost the one on my Ideor when I was working on the build for the bike. Not a high percentage bet, but if you really want to play Sherlock Holmes it can't yet be eliminated, my dear Watson.
Peter Jourdain
Whitewater, Wisconsin USA
[edit]
> does the seat collar say OLMO ?
> there's probably a good chance it's original to the bike
>
> andrei padlowski
> brooklyn, ny
>
[edit]
> >
> At the time I purchased this frame, I was told it was an
> Olmo from the
> 1960's. However, as you can see from the photos, there were
> no decals, no
> original paint, no headbadge. As Olmo's typically have a
> headbadge that
> attaches with a top and bottom screw rather than a
> left/right like this, I
> tend to think that it isn't an Olmo. Any ideas???
>
> Photos - click this link:
> http://www.mavenmaintenance.com/
>
> Thanks -
> David
> San Francisco, Ca