Vintage 6084 heirloom looking for info for restoration

[Amhavens]

I was recently passed down a model 6084 from my grandmother. She and my grandfather purchased this watch in 1952 in Germany during his time in the Air Force. I am very glad to have this watch and I want to get it back to as original condition as possible. This may take me a while though, as parts are quite expensive, but I determined to make it so. My grandfather had it serviced while in use, but it has been in a dresser drawer for probably the last 30 years. It keeps time within about 6 minutes per 24 hours, and since I only wear it to Church or other special occasions that is OK with me (especially considering it's 59 years old!)

The serial is 876470
The crown says Rolex Super Oyster- is there any significance in that?
The dial says Rolex, Oyster Perpetual, Officially Certified, Chronometer

Questions I have are:

What band would have come on it originally, and is it possible to find one? This is probably the only thing I would replace because right now it has an old spiedel band in rough shape.

There are a lot of scratches on the face- I probably would not want to fix it for the sentimental value of the fact that most of what I know mechanically I learned from him and my father, but could it be polished?

Should it be serviced with the little use it has and will see?

Thanks in advance.