PeterCDE
10167
There?s no general rule on these
Hi Ahmed,
there?s no general rule in restoring vintage timepieces; based on the description (timing is off 45 minutes every hour) it?s way off track and may need some really thorough work.
The exact work depends on the condition and whether or not the parts in place can be rescued/overhauled (which is not always possible, particularly if showing heavy corrosion). Therefore the recommendation to send it in, because any estimate of work needed and subsequently costs involved requires first-hand inspection of the condition as is.
The other critical point is whether or not vital parts in need of exchange are still available; GP Switzerland does have many spare parts for vintage movements and watches, but not all of them (simply because there are more than 300 different movements being used between 1900?s and 2005).
There are at least 8 different movements which made use of 39 jewels, so any guess on production totals will need to know the specific model reference and movement calibre.
So there?s no easy answer as to "do?s and dont?s" and it?s impossible to say if it can be repaired at all if not having an experienced watchmaker look at it.
Personally i?d recommend to have it to GP Switzerland in La Chaux-De-Fonds directly. Doing so on your own might bury you with customs and import duties for sending it back and forth, so best thing to do seems to work with your local GP representant.
Greetings from germany,
Peter
