Vintage silver brooch 1940-ies USA

Amazing silver brooch, 1940s.
Unfortunately, the author decided to remain anonymous, but presumably the brooch refers to the work of the company Pennino.
High-quality work, rhodium coating, sparkling crystal crystals and amazing color crystals of beautiful cut.
Diameter of brooch 5,6 cm.
The brooch is marked with sterling (the inscription is half-erased and hard to read).
The condition is good (on the reverse side there are scuffs of the coating).