Vintage Royal Copenhagen Wall Plaque 1959 Piet Hein Grook Denmark

Vintage wall plaque dated 1959 by Royal Copenhagen featuring a “grook” by Piet Hein. It reads: “Problems worthy of attack prove their worth by hitting back” It is accompanied by a whimsical drawing. It is in excellent condition. It can be displayed on the wall as it has a hole cut-out for hanging. It can also be displayed on a plate stand.