Japan. (Royal Air Force). 1947. Registered envelope addressed to Scotland bearing Great Britain SG 488, 2d orange and SG 489, 2 1/2d pale blue tied by 'RAF/ Post Japan/ Registered' double ring with framed hand-struck 'R/R.A.F.P.O. 320/ Japan' on face in blue.
Lovely item of Registered mail from the British Commonwealth Occupation Force based in Kure, Japan.
This is the example used as an illustration in Ted Proud "The Naval & R.A.F. Postal Services".