I started collecting LeCoultre vintage watches a few months ago and today received a Master Mariner. It has a 481 bumper movement that is in pristine shape and my watchmaker said it doesn't need a service yet. It is 34.5mm w/o crown and has a power reserve indicator from 0-40. The case is 14k and is in mint condition as is the dial and the crown. It also came with the Master Mariner box and LeCoultre strap. The buckle says 1/20 12KGF and might be the only part not original. My watchmaker and I think it is all original but if anyone sees something that leads them to believe it is not I would appreciate hearing it.