For sale, original Rolex B7870-Y1 winding pinon compatible with 1520/1525/1530/1535/1555/1565/1570/1575 calibres, complete with its blister. Vendo pignone di carica Rolex B7870-Y1compatibile con i calibri 1520/1525/1530/1535/1555/1565/1570/1575 originale e completa del suo blister.
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