1930s bike gearing system

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  GIRARDENGO Campionissimo by Maino (1930s) – SOLD
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  GIRARDENGO Campionissimo by Maino, Vittoria Margherita gears, 57cm (1938) – SOLD
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  MAINO Campionissimo Vittoria Margheritta gears, 57.5cm (mid 1930s) – SOLD
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  MAINO Campionissimo Vittoria Margheritta gears, all original, 59cm (1938) – SOLD
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  MAINO Super Campionissimo, Vittoria Margheritta gears, 57.5cm (1939) – SOLD