My late father served from 1942-78, and was an ADC to HM at the time of the Silver Jubilee. He already had a Coronation Medal, an MVO and the usual row of wartime gongs, and didn't get, expect, want, or worry about a silver Jubilee gong. He did get a couple of bizarre medals from the Russians long after he retired, though, for his part in guarding the convoys in the 'Great Patriotic War'.