I have a Gallet Flight Officer Gen 2 w/Incabloc watch that I'm trying to decide whether to keep and collect or sell. The watch winds and runs, and the face/dial seems to be in good overall condition. However, the crystal has impact marks in three different places, which is really distracting. I was thinking of taking the watch to one of our local jewelers that specializes in watch repair to get the crystal replaced. My questions are: Does replacing the crystal make the watch less than 'original'? Does it hurt the overall value and/or history of the watch to have it replaced? Thank you for any guidance you may be able to offer!