In need of some help

[LostInPlace]

I recently Inherited a safety deposit box from my great uncle. It had some coins in it and a stamp collection. Sold the coins the stamps not worth much but there was also this Rolex Submariner but I have no clue if its real.
I wanted to ask here before I take it to a dealer.
No box just the watch and it did say band replaced on 10/10.
Here are some pics

Thanks