If any of you read Baino's post from Reuters spoofing the Nobel Prizes for various things and had taken a bit of a hint, you might have realised that the postcard is from Stockholm, Sweden.
It depicts the hall in which the Nobel Prizes are awarded. The Golden Hall as it is known is created from mosaic pieces in 23 karat gold cast in glass and each piece is the size of a finger nail.
The artist for the mosaic, as noted on the card, is Einar Forseth (1892-1988). While the Golden Hall may be his best known work, Forseth is also recognised for alter pieces, murals, sketches, stained glass windows, wall and ceiling paintings and for composing and decorating porcelain dinnerware. The Golden Hall was completed in 1923.
Those interested can find a larger photograph of the Golden Hall at: http://commons.wikimedia.org/wiki/File:Golden_hall.jpg/.
While Otin's guess was perhaps the funniest, Val's comment that it looks like a mosaic is spot on. My thanks to all of you who stopped by. The postcard dates from 1970 and was sent to me by my parents.