This GB Br. Technology 1966 FDC pm Manchester is a must-have for any stamp collector. The cancellation type is First Day of Issue, which adds value to the stamp. The topic of the stamp is Technology, which is a fascinating aspect of British history. The stamp is part of the 1953-70 series and falls under the category of First Day Covers. It is a great addition to any stamp collection and is a rare find. Don't miss out on the opportunity to own this piece of history.