40-50' s Vintage Rolex Oyster Stainless Steel Case
There are no numbers on the Rolexcase ends between the lugs or they are worn off.
The case measures 32.22 in diameter ( mm ). The opening for the case back is 26.6 and would be larger if adding the case back threads.
Caseback is missing.
It looks like it dates to the late 1940's or early 1950's.
It has a stainless steel fixed bezel and could be for a large bubble back, but just a guess.
1OO% Rolex item Authentic.