This was scanned from a greeting card, probably bought from the Wave Gallery souvenir shop. The painting is by Aat Veldhoen, (see more of his work), marked No. 37, also resembling the strokes and colors of his later surreal painting. The gallery is (was) located at Nieuwe Liliestraat 81, 1015 SK, in Amsterdam, Tel. 020-265577
I obtained it from the Modern Language Building of the University of Michigan in 1984.