In addition I think locking the threads so that pictures cannot be removed is important is it provides the buyer with some sort of protection.

If the watch arrives and it is not as expected then you have the OP as evidence. I had this happen to me a couple of years ago, the watch was delivered with the subdials not resetting but the sellers original post showed them aligned when I bought the watch. Unfortunately by the time I received the watch the photos had been removed which made it harder for me to argue my case that the product had been mis-represented.