1964 (04) Shakespeare - Ord - Air Mail Envelope - Field Post Office 573 CDS

Extremely rare Air Mail Envelope.

Full set of the non Phosphor samps cancelled with a Field Post Office 573 CDS.........

Up till now the only Field or Forces Post Office CDS cancellations known to exist on this issue was the Field Post Office 1050 CDS......... quite probably, this 573 one may be unique....

Code: 62733