I bought this used for a great price on eBay from a Japan seller with great reviews.I just got this message from eBay authentication:

“I’m happy to share that the watch has been confirmed authentic however, after inspection, we’ve determined that the crown screws down all the way but does not reach a stopping point, it just keeps turning.”

Is this absolutely unacceptable or not a big deal?

This was not disclosed by the seller and I have the option to get a refund, but I have been after this for a while and got a really good deal on it, unfortunately I’m not knowledged enough to know.

For some more context: watch is otherwise in pretty good condition. Even though got an awesome deal, this a large amount of money for me and wouldn’t want to have to spend extra on service and fixes…

I have a couple days to make up my mind and would appreciate any help.