Set of 2 wooden boards with butterfly botanical board

Rare set of 2 small wooden paintings with botanical plates representing butterflies after engravings by James Duncan (moths). Main colors beige and brown with touches of orange and blue colors depending on the butterflies. Fairly light chipboard board, with hook on the back, with a painted edge. Good general condition for these vintage paintings. Note small snags and paint smudges which accentuate the patina side. Identical dimensions 20 cm high, 15 cm wide and 1 cm thick.