I wouldn't recomend any DIY attempt....

Hi,
it's a very nice and precious watch - I wouldn't recomend to try it yourself!
A simple slip an ruin the hairspring for example (many other channces to ruin something else ...)
and he outcome would be very expensive :-((

If you don't want to "invest " in a factory repair - why not look for a good, competent watchmaker around your place
and have it checked?

A deviation of that amount normally indicates something else (necessary service lubrication ...)

If you'd like to get into working on a watch movement - look for some decent, simple, handwound
time only watch (or even better pocket watch) for your start into "watchmaking" - these can be found
for relatively small money and you can get an idea of the difficulties involved.

Best regards
Suitbert

Intending to adjust vintage movement myself?

By: Halcro : December 17th, 2013-00:05

Having just acquired a 1952 Patek Ref 1491 'Scroll Lugs' Calatrava with 12-120 Movement..... I find that wearing it daily....it loses between 15-20 sec a day. I intend to open the back and adjust the screw thread which moves the lever on the adjustment sc...

Very nice movement, by the way. I try to do it by myself by moveing the " raquette ". Here, a tad towards " F ". Just a tad. Then, monitor the first 12 hours, to see if it is enough, or if your hand was " too heavy ", then correct. Best, Nicolas

I will practice.....

By: Halcro : December 17th, 2013-04:07

Thank you Suitbert and Nicolas, I already have an old mechanical watch to practice on first........:-) The watch has been serviced by a PP AD in Los Angeles from whom I bought it. I however live in Sydney.......and I don't want to take it to the AD here a...

Patek Philippe