This dilapidated 1940s Olmo recently showed-up on eBay-Italy (blue bike). Poor photos reveal little except the toothed dropouts for a Campagnolo sliding hub shifter, and a Universal front brake with qr. What a mess... first one I've seen that was in worse shape than the one I bought a few years ago (green bike in last two pics, before and after overhaul).

The red seattube panel is interesting... no hint of color other than blue on the headtube. The seatstays and chainstays clearly had about six inches of chrome... the fork is too far gone to be certain. The fork crown was probably chrome, although the headlugs were not.

My bike is almost certainly a respray. The headlugs and crown are chrome, but the ends are not. I really should get some better pictures of the green bike... sun is out, so maybe today?