OT looking for a rank/rateing patch

[stumpjumper]

guys here is exaclty what im looking for a US naval radio man 3rd class vietnam era if possable, my father in law did 3 tours on the uss constilation cv 64, i have for xmas made a wall plaque for him with a 1/800 scall model of the conny with a complete overlay of who his capts where deployment dates, ship dimension,s and his name tab but i cant for the life of me find his rank/rating patch if anybody can find me one plaese let me know

stump