Sea Dweller 1665 with error dial ?? Can anyone help ?? Thanks

[E46seca]

Hi guys I'm new on the forum. I recently came across a watch I've always wanted to own the sea-dweller 1665.

Here's my question the dial doesn't seem like it's been refinished. But it doesn't correspond to the 1665. Actually it's a 5512 dial but with a date window. So here are some things I noticed on my watch any input or expertise Is highly appreciated.

1. The movement is a 1570 and the rear case is a 1665 ( So I'm not worried about that not been authentic )

The bracelet is a correct 93150 with 585 end pieces. The bracelet is a "VE" which also corresponds to the watch.

2. My dial below "ROLEX" doesn't say " DATE " at the end like a standard 1665 dial would.

3. If it was refinished , then it could not be a 5512 dial how would it fit ? Also the 5512 didn't have a date window ?

4. The inscribed portion where it usually read " REGISTERED TRADEMARK " then the model number , it doesn't say " REGISTERED TRADEMARK " but just 1665. It doesn't look like it was brushed off neither.

It's a 6.6 Mil series dating to 1981.

Thanks for any input