Looks like the big brother to my 1024...
They are 18K gold capped cases, supposedly more durable in tropical climates according to the folks at VRF.
Mine came from my Great-Uncle, it's from the early-60's.
It looks almost like this dial from VRF...
Not a great pic, but the "R" looks the same, as well as the spacing between the coronet and the marker....
Edit: This is an "E" serial from 1990.
Here's mine...
The base was the MBK 6538. It is not a good way to start. The best bet would probably be a NDTrading case and go from there.
I installed a MY bezel and a Brevet crown so far.
It still needs a ton of work. I need a dial, hands, bezel insert, drilled lugholes, etc., etc.
It's like everyone says, it's a DIY project.