This silver brooch depicts an iconic motif from the Georg Jensen designers.  The brooch, which is hear-shaped, shows a pair of dolphins that are leaping over an oyster shell.  It is based on the design by Arno Malinowski and bears the Jensen stamp and design number on the reverse.  The brooch is in excellent condition.
 
Details

Vintage Jensen brooch
Design no. 312
Designer - Arno Malinowski
Post 1943
Sterling silver
Approx 2.5 x 1.5 inches