Apologies if i'm posting this in the wrong place. Should start by saying i'm new to watches. Watch keeps good time for me, about 10 seconds fast a day. Just the movement/dial etc is wobbling in the case. Doesn't seem to move when the crown is pushed in but when it's pulled out and winding it will move then. I assume this is something i should try to fix, is it possible i can do this? any help would be great thanks. Cannot afford to take it to be serviced atm

mine has that black plastic bit...

Cardinal Submarine help (movement wobbling in case)

Tried asking on vintage watches on Reddit & the main watches sub with no luck. Thought I'd try here before I give up.

Just looking for the date specifically, any other info would be cool though. Gonna paste my message from there, thanks -

Gold colour on the strap is heavily worn but the case is ok. Photos make it look a bit more gold than it is. says 21 jewel Swiss made. 36mm I believe. More pics below thanks