The reason I do not disclose serials is for fraud-
It doesn't make much sense to list full serial numbers on the internet when someone can then take a valid correct sequence and then use for dubious purposes- If it violates TOS- I apologize & you can have the post deleted. I would rather have my post removed for NOT disclosing valid correct serial numbers, then some person down the road be a victim of fraud due to serial number theft.
I hope this makes sense, there really is no reason I see of to list valid serial sequences on the internet. The end owner of any watch purchased on line may or may NOT want this information public.
You may wish to rethink your serial number policies if that is a violation of TOS. I would think its aiding fraud of making of fake cases, movements etc- when you publish unique identifying numbers... Maybe I am just paranoid because I have been a watch dealer for about 18 years and have seen rampant fraud and misuse over the years.....
Chris