Vintage Art Deco Geometric Brooch

Vintage, mid century pin in brass with copper shading. Art Deco styling featuring an architectural design. Looks like a stylized seafront with waves, mountains or perhaps a seagull. 1&3/8" x 1&1/4". The surface is a little scratched up here n there but otherwise in good vintage condition. So unique! Makes me think of the film Metropolis. Striking, Art Deco brooch with Machine Age vibe.