Please do not expect quartz accuracy from any vintage mechanical watch. The accepted timekeeping tolerances for a brand new watch back in the 1940s and 50s was +/- 3 minutes a day. Please note that timekeeping can vary by a few seconds according to the angle a watch is being worn on the wrist — for instance, when it is dial-up or on its side. Also, a fully-wound mainspring delivers more power than when it has almost wound down, so this can also affect timekeeping slightly.
Cleaning and freshly oiling a vintage watch provides it with the best chance of optimum performance, but does not imply that it is in ‘as-new’ condition. While disassembled, the movement is carefully observed to ensure that there is no excessive wear and that no parts are broken or damaged. Any badly worn parts are replaced if necessary and when re-assembled and oiled all functions are checked to ensure the watch is working correctly. Following servicing, it should run reliably for the foreseeable future, unless it is dropped, damaged or subjected to water or dusty conditions, or become magnetised. However, due to age, please be aware that they may still be less reliable than a modern watch, even if serviced and ongoing maintenance might be required. For this reason, I am unable to provide any warranty beyond the standard 14-day return period.
Even though my watches are very securely packed and protected when posted, sometimes there are turbulent conditions in transit that have been known to affect fine adjustment. If this happens and your watch is not keeping acceptable time when received, just let me know and I will be only too pleased to help. I want you to be completely happy with your purchase and whilst unfortunately I am unable to offer a future repair service, I will of course ensure that you are completely happy with the working condition of your watch when delivered. If there is any problem at all, please contact me immediately and we can discuss either adjustment/repair at my expense or a full refund if you prefer.