I guess this question can apply to any vintage watch, but since I primarily been collecting omegas, I decided to post it here. I have been collecting for several years and have always been taught to look for original unpolished cases, original dial and hands and preferably original lume. Basically just the way the watch has come out of the factory that year. I have been noticing now more than ever a lot of vintage pieces that look like they came out of the factory yesterday. The dials and hands looking pristine. How is it possible for a 30 or even 50 year old watch to have no patina and no wear? In many of the cases all the parts are original, and the most likely explanation is that a watch has a service dial or hands or both. If that is true, does it make the watch less desirable to a collector? Also is it possible for these watches to be in such mint shape without having service parts?