Striking set of 4 midcentury wall plaques. They are made of what appears to be pressed brass. Each has a raised design with a painted background. They have some tarnish and some dings along the edges/frames, see pics. They are backed with cardboard, which is stamped "Made in Holland".  The one with the cranes is missing the hanging hook on the back. Each plaque measures 21.75" tall and 6.75" wide. Very cool set for your midcentury inspired home.