FS27x Machin 50th Anniversary Post and Go Collectors Set of 36

2017 marks the 50th anniversary of the issue of new Queen Elizabeth II definitives featuring Arnold Machin's iconic bas-relief sculpture which replaced the Wilding definitives. Arnold Machin's 1967 portrait of Queen Elizabeth II (sometimes referred to as the Machin head) has been reproduced over 200 billion times.  

A new commemorative set of Post and Go Faststamps is issued in six colours, approximately matching the original ½d orange-brown, 1d olive, 3d violet, 4d deep sepia, 7d bright emerald, and 10d drab issued in 1967-8.

This is a set of Collectors Set of 36 values from a Post Office Self-Service Kiosk, being all 6 values in all 6 colours.