I am a vintage guy but wasn't talking value. Value as per the PN Daytona's that were sold in auction, both were engraved and did not affect the value whatsoever in a negative way, actually for the better. A lot of people back out of purchases for engraved watches, I find they give personality and history to watches.
Indeed but a main spring is certainly not something that will change anything in terms of originality, neither Patek or Rolex make their own mainsprings, only a handful of manufacturers make them all for everyone. The dishonesty comes in play when dials were redone, changed for non correct oned (not perior correct), touched-up, cases were rebuilt and everything you might think and do not belong or are not period correct. When the dealer does not disclose these, as seen mostly on a certain big market place it is extremely frustrating as the "unpolished" "untouched" "all original" claims are either misused, used because they don't know or fraudulously used.
Again, sharing information about every single watch that goes through our hands is impossible as some watches may have been serviced 10-20x in 50 years and what parts were replaced 6 services ago is impossible to know. What we can do as sellers is verify originality of the case/hands/dial/bracelet and period correctness. Movements also need to be the correct ones. Parts may have been replaced in the movement and we will never know, as long as they are what belongs there.
It is a true labyrinth to buy Vintage, I agree but you need to understand what you buy before you do and always do your due diligence on the seller and the piece you buy.
Good luck!
In most cases I do not provide proof of service as a dealer, I am billed on lots of watches. Honesty gains customers with good service during and after sale. Again, depends who you deal with and how each dealer/seller values their own name. Lying is big accusations; with vintage, surprises are more common but the buyer and seller should be well aware of that and assume responsability on each side when something happens due to mishandlind from the buying party or a normal warranty from the professional seller or a base guarantee between privates.
Buy the seller they say....
Good luck with your future purchases!
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