Postmark - Great Britain 1973 cover bearing special cancellation for 16th Signal Regiment, Krefeld '600' Air Day (BFPS)
Postmark - Great Britain 1973 cover bearing special cancellation for 16th Signal Regiment, Krefeld '600' Air Day (BFPS)
Postmark - Great Britain 1973 cover bearing special cancellation for 16th Signal Regiment, Krefeld '600' Air Day (BFPS)