Description
Air Post Exhibition (APEX) London 9th May (3rd day) 1934 cover
The communication in the Savoy Hotel envelope was posted from the Special Post Office on the third day, May 9th, and bears a 2½d stamp cancelled by the special winged cds, plus a commemorative label, plus the Exhibition cachet. It is backstamped for an arrival in Basle, Switzerland on 10th May 1934.
Ref GB5