A very nice watch. I agree with Francois, timing the watch without first having it serviced would be pretty pointless, since the watch isn't running in its best possible condition at the moment.
Have the watch cleaned, checked and serviced by a qualified watchmaker. Usually the watchmaker will do a rough time-check of the watch as well, but timing is something you can also do yourself.
Have the watch cleaned, checked and serviced by a qualified watchmaker. Usually the watchmaker will do a rough time-check of the watch as well, but timing is something you can also do yourself.