The writing on this pleasant piece of memorabilia reads:
Flown in Piper Archer PA28, G-BTNH from Biggin Hill to Peterborough from where the Royal Mail was first flown in a helicopter. Then along the route taken by the postal helicopter on 1st June, 1948, to Norwich. Returned to Biggin Hill after landing at Old Buckingham.
Pilot: Peter, Lord of Abbots-Hay
Co-Pilot: Roy St.Clair Finch
Observer: Derek Hardiman
Sikorsky S51 G-AKCU c. 1948
G-AKCU was first registered to Westlands in 1947 and then sold to BEA in January of the following year.