Hard to tel much about the condition from those photos.
The dial appears original but better photos needed to confirm
I am not looking to sell now, I'd like to wear it a while, but that said if I do sell in a year or so I don't want to loose money.
I think $300-$400 is a reasonable value between collectors. The OP will have to decide if he really thinks he could sell his watch for $650, after fees and shipping.