North Korean stamp (with Dürer dandelion)

I have a stamp from North Korea in the Dandelion Archive. Issued in 1979 it is to commemorate the 450th anniversary of the death of Albrecht Dürer (1471 - 1578)*  

The stamp has the title of the artwork as 'A Big Tuft of Grass' but it's also known as 'Large Piece of Turf". It was painted by Dürer in 1503 and the original is held in the Albertina in Vienna. Amongst the grasses, yarrow and plantain are some dandelions either just opening out, or they could be closing after flowering (one or the other). Beautiful!

*I can't quite get that to add up, but whatever.