Ok so could still be the same person as that number is a post 1943 number I have a medal group where the chap changed branches in 1944 so was given a new number jx is seaman branch Kx is Stoker branch Mx is miscellaneous branch includes artificers, sick berth attendants armoured crew etc
TD can’t open the below or the attached one on the web. Any chance anybody can see it please and let me know what it says. https://www.navy.gov.au/sites/default/files/documents/5616-5731.pdf