Omega Seamaster 'casino royale' time gain

Hi, I'm new to the forum and just bought my first Omega. It's a black dial Seamaster ref: 212.30.41.20.01.002

The watch is from 2012 and I have the full set. It was tested 2023 and it gained +3sec / day and I have a receipt from that also.

I bought the watch a week ago and it gains now +12sec / day. The previous owner is not sure when the watch was serviced last time since he bought it used that year 2023. The watch should have 48 hours power reserve, but it's more like 43 hours. Other than that it works fine.

Would you get this watch serviced because it now gains +12sec/d instead of previous +3/d? Or any other insights if I should get it serviced now? I can live with this +12/d but I thought that maybe getting it serviced would make it last longer, if it's now dry or something like that.

Any thoughts would be appreciated. Sorry for this rookie question.

Have you tried putting it in different positions, when you are not wearing it?

May help - but I'd get it serviced regardless.

I'm not sure if I quite understand what it means to regulate a watch. But if it's anyway three years or more from the last service, should it be better to do a full service? Of course, I wouldn't like to pay something like 800€ from a service if it's not needed. My intention is to keep this watch a long time, so I'm willing to pay that money if it gives my watch a lot more healthy years.

How something like this can happen to the bezel? I suppose it wasn't like that as new.

Thank you so much guys! I will get the watch serviced because it has sentimental value to me (My dad happened to die later the same day I bought the watch i.e. a week ago), so I'm not selling this one as it is also a dear memory.

Does the watch look otherwise authentic? I got scared that it might be fake because of the bezel.

I attach a picture from the back as well.

It looks good.

Sorry to hear about your dad.

Man, send it to Omega for a full service. It’ll come back looking good as new, keeping accurate time, and it’ll have a fresh 2 year omega warranty. Worth the time for a piece that has sentimental value.

But maybe wear it for a while to bond with it first? As you say, just keep it dry.