This R25 arrived today and I was hoping that someone well--versed in LIP watches might be able to help me determine its age. It lacks the dust cover inside and has no model name on the dial. It's one of the large R25's, being 38.5mm across. I appreciate any information at all! Thanks!
Hi there , Place the tool down in front of you so that the pointed main body part is facing you .Then the way you set in motion is to gently rock back and forth with your thumb and forefinger on the small pointed handle you see at the front . Once in motion the spring that you are talking about is used as a brake to stop the balance wheel .just move the little lever , you will see the balance stop . If the balance wheel does not move then you may need to check pivots and that hairspring . hope this helps .