Great info Springer! These info are definitely gems in the world of vintage Rolex and they help to separate the genuine from the fakes !
Shall have them saved for future references. will pop by more often to such check out such great stuffs!

Great stuff Springer... This is the first time I have seen these codes. Am sure many will benefit from this knowledge

Thanks Springer for recommending this great site. It has been referred to many times over and I must say it is by far the best site on the Red Sub and Double Red Sea-Dweller I have come across