1992 (06) Greetings/Civil War - Royal Mail Triple H/S Test Cover

Totally unique and not supposed to exist Greetings/Civil War - Royal Mail Triple H/S Test Cover.....

Serviced by Royal Mail at the Swindon R&D Centre, and were not intended to be released to the public - but one has !!!

Identified in the Booth Catalogue (Page 182 - 29th Edition) - Sold in a well known auction house for a three figure sum !!

Code: 57811