For some reason it earned itself five IMB strips.
Here it is without the strips so you can enjoy the view.
The other commemorative stamp, almost disguised in the print, features the work of Léonard Foujita, and artist who rose to fame during the 1910s in Paris. This stamp shows his work Le quai aux fleurs, Notre-Dame (1950).
Thanks for the wonderful stamps and envelope, and the very interesting contents, Fafa.