Hi I juste buy this watch whit is box for 35€ what do you thinks ! ? She didn’t work yet but she is clean at the outside i juste open it and is verry dirty ! But the mouvement is clear
You did okay if you can get the watch serviced/repaired for free somehow. I'm not sure if the dial can be cleaned of that black gunk at the bottom, which seems to be the case back gasket that disintegrated and made its way to the dial. These watches are not worth much even in good, working condition.
edit: Forgot to add that this is a reference 551.052, in case someone else needs that info in the future