Just sharing my own experience buying 2nd hand Pam 312... (in-house movement don't have COSC cert).
1. Must come in complete set: manual, warranty booklet, movement stickers, 2 straps, case protector, screw driver for changing buckle, pin tool for changing strap, polishing cloth, wooden presentation box, outer black box... and of course, the watch itself.
2. Case number (e.g. OP67XY) , movement number (PA63XY), watch serial number (BB1366XYZ), watch series number (L0123/2500) ... all 4 numbers must match on the movement sticker to the warranty booklet and to the watch itself.
3. Exhibition case back harder to replicate as the movement is visible.
4. If in doubt, send to JW for authentication... $107 nett.
1. Must come in complete set: manual, warranty booklet, movement stickers, 2 straps, case protector, screw driver for changing buckle, pin tool for changing strap, polishing cloth, wooden presentation box, outer black box... and of course, the watch itself.
2. Case number (e.g. OP67XY) , movement number (PA63XY), watch serial number (BB1366XYZ), watch series number (L0123/2500) ... all 4 numbers must match on the movement sticker to the warranty booklet and to the watch itself.
3. Exhibition case back harder to replicate as the movement is visible.
4. If in doubt, send to JW for authentication... $107 nett.
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