Automatic Device Upper Bridge . Reference number: 3135-140 MAY fit the following 3130 3135 3155 3175 3185 3186 Unused new out of packaging ROLEX movement partAll come from an authorized Rolex watchmaker who retired and left us all his parts to sell. SOLD AS IS, AS DESCRIBED.NO RETURN ACCEPTED.Must have 5 or more positive reviews. Please ask any questions before bidding.