I have a bike that had a Magistroni crank, well, actually two, and the quesiton is related to each. As I understand it, though I am not writing that is the way in which it is, Magistroni was a manufacturing name or a brand of an Italian company called, Officine Mecchaniche Giostra. Both of these cottered cranks came with spindles marked O.M.G. One of the bottom brackets also has a lockring which clearly has "Ofmega" spelled out around the serrations at the edge.
My questions are these then: is the O.M.G. spindle a Magistroni one, and in particular, the one that has "Ofmega" marked on it, was Ofmega another Officine Mecchaniche Giostra brand? The Ofmega and O.M.G appearing closely related or at least a seeming cognate of the company..
Once again thank you.
Cheers.
Tom Hayes
Chagrin Falls, Ohio USA