I had a 7548 7000 from the bay, that was recently "serviced", upon receiving it the movement looked like it had been deep fried. Everything was OK, dial and hands not ruined by it. Just let the seller know that it was in bad way, other things were wrong, but the price was very good. I sorted them all out at no extra cost, had spares to hand. Let them know of the problem, but if your happy with the watch, no point rocking the boat, even ask them to send a gasket or two as good will?
Regards, David