Benham first day Cover with very with set of 5  x 20p ‘Lord Mayor’s Show’ Commemorative stamps which were issued October 17th 1989.

The stamps are:-
20p Royal Mail Coach

20p Escort of Blues and Royals

20p Lord Mayor’s Coach

20p Coach Team  passing St Pauls 

20p Blues And Royals Drum Horse

Postmarked:- Exhibition at the Museum Of London, 800 Anniversary, City Of London, Lord Mayor, 1189-1989, London EC, 17-10-89.
Lovely silk picture on the front cover of The Lord Mayor.
This is an official cover.
Information card enclosed about The Year 1989 being the 800th Anniversary Of The Office Of Lord Mayor Of London.

17.10.1989 LORD MAYORS SHOW. Dispatched with Royal Mail 2nd Class Letter.