This Balle brooch and earrings classically represent the modernism era from the 1950s-60s. It is enamel on sterling silver made in Norway.
The black on yellow evokes a leopard-like feel to the abstract design yet also looks like silhouetted dancers.
It is quite a substantial size at 1 3/4" diameter on the pin and 1 1/4" on the earrings. Clip backs on the earrings. All of the pieces are hallmarked. They have a gold wash. The enamel is done over a guilloche ground (there is a subtle squiggly design under the transparent yellow area. The black areas are opaque and appear dimensional).
Excellent condition with no damages. Secure "C" clasp closure.