Vintage KJL Kenneth Jay Lane Signed Art Deco Crystal "Shield" Fur Clip Brooch

Here, I have a vintage Kenneth Jay Lane Art Deco style crystal brooch that resembles a shield. It features a fur clip in the back, attached to a hinge that prevents it from opening once in the closed position. No stones are missing. There's slight yellowing in the bottom 3 princess cut crystals and slight darkening of a few other random stones. The metal looks to be in excellent condition with little to no flaking or wear that I can see. It is signed on the back "Kenneth Lane" with the copyright symbol.