Depends on what service you are looking for, I think. They do service vintage watches, if you are in the USA the watch will be sent to Switzerland and you will receive a detailed list of what they consider needed and a list of recommended, you can decline the recommended portion. They are not inexpe
When I purchased mine in 1994, black dial was in, kind of like salmon and green today. At the time Black dial came with diamonds especially for platinum case, so diamonds or not, I wanted a black dial. It was and still is a rare watch, well proportioned and pretty nice layout on the dial.