Submariner 5512

[franzumb]

Hi, hope this message finds you well. I am new to this forum and I hope you can help me see if this watch is original(or had parts replaced). A watchmaker who used to work for a Rolex AD in my home country bought this watch a long time ago and offered it to me. He has shown me his tools and is very familiar on movements etc. He has this 5512 which he says is all original. The movement is engraved as 1530 and doesn’t have a COSC certification, the serial number is 47XXXX. The main issue I have with it is the lack of eagles beak and ring around minute markers. He replaced the bezel insert and hands for aesthetic purposes but the original are included. Hope you can help me with the pictures I attach, thanks in advance.