I will be travelling to the Philippines next month which means passing through 3 sets of airport security. Departure, stop-over and arrival. I intend to take 2 of my vintage pocket watches with me as I will be away a couple of months, and I use a pocket watch every day. I am concerned that the x-ray equipment may magnetize my watches. Both watches were bought from e-bay and both watches were magnetized when sent to me causing them to gain rapid time. I know that they were not magnetized prior to being sent, so that means that it occurred in transit. I have had both watches demagnetized, but am wondering if any members know of a way to prevent this happening again? should I pack in checked luggage rather than carry-on? Any advice would be greatly received. or am I worrying unnecessarily?