Vintage Sphinx London Bird Brooch, Gold Tone Blue & Green Enamel Pin, Numbered A2597

This vintage brooch is attributed to the esteemed British costume jewelry manufacturer Sphinx, identifiable by the distinctive "A2597" design number stamped in a cartouche on the reverse. Founded in 1948, Sphinx produced exceptionally crafted jewelry, frequently leaving pieces unsigned but marked with a serial number, especially when fulfilling commissions for prestigious brands. This specific design captures a bird in a dynamic, diving posture.

Vibrant cobalt blue and emerald green enamel work is meticulously applied over textured gold-tone metal to define the wings and tail feathers. A single green rhinestone acts as the eye, adding a subtle glint to the sculpted head. The rich color palette and documented design number make it a highly collectible and desirable example of mid-century British costume jewelry.

Specs
Maker/Artist: Sphinx (Attributed via stamp A2597)
Year Made: 1970s
Materials: Gold-tone base metal, enamel, rhinestone
Dimensions: 2.25" H x 1.75" W x 0.5" D

Condition
The front enamel and gold-tone details are in excellent vintage condition with vibrant color retention. The reverse side shows some standard plating wear and darkened metal near the pin hinge, which does not affect the functionality of the clasp or the wearability of the piece.