In: from the United Kingdom

I was wondering why John had sent me a postcard showing a boat, until I read the description on the back side. It is a Floating Post Office!
The photo was taken in 1934 at the Liverpool Docks (photographer unknown, alas), and now is in the British Postal Museum & Archive.



And I keep on learning thanks to stamps! The postcard was sent one day before Commonwealth Day, an unknown day to me until now. This year the day happened to be on the same date as in 1983 (I learned thanks to wikipedia).

Thank you very much, John!