i'm not buying this. some were made in rancho santa fe. some were made in oakland. some were made in san marcos. the "C" would logically connote california. e-RICHIE chester, ct
Bob, the convention at Masi in Italy was to use letters to signify cities where the bikes were built (the subcontractor's city) so that there would be a letter and frame size in cm stamped in the BB (no serial number but you knew that).
So you'd see M 58 with the "M" signifying Milano or V 57 with the "V" signifying Verona etc. So logically the MC would signify "Masi Carlsbad" and not "Masi California."
Chuck Schmidt South Pasadena, Southern California
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