Aviation: The Royal Air Force Diamond Jubilee 1918-1978  presentation limited edition Windsor Mint set of two bronze medallions and `Trenchard` ingot with plush-lined fitted case, 160mm wide, and certificate numbered 359  (limited run of 8000). Certificate of authenticity and offer leaflet from The Windsor Mint. Vintage 1978. Original condition having always been in the presentation case. Some very slight tarnish to the rim of one token. Coins and Trenchard are double sided with images and text.