1974 (04) Fire Services - Cambridgeshire County Council Fire & Rescue Service Official (Traffic Light Margins)

Scarce Cambridgeshire County Council Fire & Rescue Service Official.

Each stamp however is a Traffic Light Margin.......

Can't remember ever seeing this Official with these Traffic Margins on a cover in this way before..... not saying it's 'unique' but can't be many like this out there !

Code: 65734