1966 REGISTERED MAIL CHELTENHAM TO NEW ZEALAND/2/6 CASTLE USAGE. Envelope (254 x 111) sent registered mail Cheltenham to Palmerston North, New Zealand with Wildings 1s x 2 and 3d also good 2/6 Castle (tone spot and several short perforations) cancelled CHELTENHAM date stamps 16 MR 66. (Ref 109633).
