80th Anniversary Medallion for Short Wright Flyer

On one side it has:
SHORTS.
80TH ANNIVERSARY SHORT WRIGHT FLYER
1909- 1989
On the reverse it has:
WORLD'S FIRST AIRCRAFT PRODUCTION CONTRACT
1909
SHORT WRIGHT FLYER

Short Brothers had a manufacturing plant both at Rochester Esplanade and on the Rochester Airport in the buildings later occupied by Elliott Bros. This medallion commemorates an event that took place much earlier: in March 1909 the Shorts received a contract from Wilbur and Orville Wright to build six Model 'A' Wright Flyers for sale to members of the Aero Club. The Shorts received £1200 for this, the first contract for batch production of aircraft to be placed in the United Kingdom.
See English Heritage website

The medallion comes in a case the dimensions:-
75x75x20mm. It weighs 151g