hey guys Im hoping for your help with an old Heuer Autavia 1163 with serial 225xxx. This watch was literally found in a box in a barn. The crown is missing and one of pump pushers is missing, badly needs a crystal also. I used a caliper to measure the only pusher left and get a measurement of 4.95mm. Looking for any advice on what exact parts I might need and where to find them. please and thank you guys in advance