DENMARK, 1984

Denmark stamp joke
The Danish mail printed a series of 'stamp jokes' on the inside cover of booklets containing definitives in 1984. It took me 20 years to find out about the existence of this booklet.
The 'joke' is apparently that rock mucicians are as developed as cavemen.
As happens all too often in cartoons, prehistoric species from very different ages are juxtaposed.
 
TvE