Today's theme of Maria's link Postcards for the Weekend is Transportation. I like especially trains. But also, everything related to the transportation of mail, of course!
This postcard from the Postal Museum in London was sent by John (the UK), . The back of the postcard provides some information about the picture:
BSA Bantam, 1970. The Post Office carried trials with motorcycles throughout the early 20th century. The BSA Bantam bikes are probably the best known and were purchased by the Post Office for telegraph and letters work until production ceased in 1971.
I had received a stamp from the same series (different model!):