Most of the times servicing an used watch is not an easy task. You can get a dirty movement with a worn out parts, bended and rusted small pieces that are hard, next to impossible to restore or source. It can be a nightmare because a lot of times the watchmaker needs to evaluate the risks and choose the most safe way even though the result will be far from perfect. But, when we are dealing with NOS (new old stock) watches the situation is way different. In a good way, of course!
Here we have two new watches even though they were made about 50 years ago.
After stripping down the movements they were cleaned, oiled and reassembled. No new pars needed, no, polish needed, there was no rust, no accidents along the way. This is the best you can get both as a collector and as a watchmaker.
Bottom line, and my advice to you when getting a Vintage Citizen Watch is trying to get one in the best condition you can, it will save a lot of money, time and stress along the way. 😉