Remember to note that starting off in 2005, Rolex commenced engraving the serial selection to the inner bezel (often called the rehaut) beneath the crystal at the 6 o’clock position. ST one zero five.003-65 could possibly be much more than 7 characters, it’s also damaged down into 4 neat “chunks” https://www.watchesworld.com/a-history-of-watch-reference-numbers/