Last weekend I stripped an Olmo frame which appears to be from the eighties. The fork crown has the Olmo star indents and the dropouts are stamped 'Olmo'. Other than the number 6 stamped on the steerer tube there are no other markings on the frameset. The frame has nicely brazed lugs, downtube braze-ons for the shifters, bottle braze-ons fitted to the seat tube only, no braze-on for the front mech and lovely brazed-on fluted seat stays.
What surprises me is that there is no serial number on the frame. I may be showing my ignorance here, but is this usual?
Dave Peace
Rudston
England