Genuine Gretsch Dynasonic Pickup Spacer. Measures 3.388" X 1.577" X .135"-.061" thick"; molded to fit an arched top so it's thinner toward the center. Yes, this will fit your '50s Gretsch with DeArmonds. Also fits NEW Gretsch guitars distributed by Fender Musical Instruments. Brand New. 0061023000. UPC 717669208424. Please note that we're selling the very latest version of this spacer with a nice cutout for output lead clearance.