Just bought a watch that was delivered to me by Royal Mail - the OP said the watch was running "to time" but when I received it the watch was running fast by more than 5 minutes per hour
On checking against a compass the watch "moved" the needle off it's position plus I downloaded LEPSI to my iPhone and I got a "magnetism detected" signal - so I presumed that the watch has been magnetized en route
I get one of those small Chinese de-magnetizing machines off Amazon when I get back from holiday to (hopefully) sort it out
Anyone-else had this problem