This beautiful stamp was on my recent Philatelovely blanket order.
This stamp of Snow Drop flowers is one of four released on March 21, 1979, commemorating British flowers. Stamps were issued for the primrose, the daffodil, the bluebell, as well as the snow drop. In addition to the stamps, corresponding postcards were also issued. Designed by Peter Newcombe, this stamp measures 30x41mm and was printed by Harrison & Sons, Ltd using a photogravure process.
Full information about this stamp, including photos of the other three flowers and postcards, travel to this site here.
Peter Newcombe, the designer, created a documentary film for the Post Office entitled "Spring Quarter." The film won a gold medal at the 1979 New York Film Festival. Unfortunately, I have not been able to find a copy of the film. But, my research into it will (hopefully) yield a future post on postal films.
