These envelopes have been produced by individual companies, wishing to commemorate an anniversary. Usually there is a special postmark.
50th Anniversary of 6th Derby Company
26th April 1969
60th Anniversary of 1st Southend-on-Sea Company
There is an accompanying card to mark the 60th anniversary.
1st November 1969
50th Anniversary of 3rd Bridgwater Company
There is an accompanying card to mark the 50th anniversary.
26th January 1970
40th Anniversary of 1st Devizes Company
There is an accompanying card to mark the 40th anniversary.
4th September 1970
40th Anniversary of 1st Kingsbury Company
18th November 1972
540th Anniversary of 8th Northampton Company
30th April 1973
50th Anniversary of 1st East Kilbride Company
An accompanying card provides some history about G. Norman Smith (the founding Captain) and the formation of the company.
28th January 1983
Centenary of the Boys' Brigade in Wales
1st Newport Company
The accompanying insert gives a history of the Boys' Brigade in Wales and the 1st Newport Company. The cover design and choice of handstamp (Newport Transporter Bridge) is also explained.
17th November 1987
BB on Stamps