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Newly unboxed! This is a vintage Unity Manufacturing Co. roof-mount spotlight, likely a mid-century model (late 1940s to 1950s) designed for emergency vehicles, tractors, or commercial trucks. Based on the images and your technical background with vintage gear, here are the specific details:
Hardware & Identification
Model/Bulb: The yellow sticker 4-4503 refers to the GE 4503 sealed beam lamp.
Designation: The Art Deco-style chrome housing features a vertical red badge. While the text is stylized, it identifies it as a genuine Unity product
Components & Installation
Mounting: This is a roof-mount (rather than the more common post-mount/A-pillar type). The chrome base plate with four mounting holes is designed to sit flush on a flat or slightly curved roof.
Control Mechanism: The long chrome shaft extends through the roof into the vehicle cabin. The handle allows the operator to rotate the light 360° horizontally and pivot it vertically.
Included Materials:
New in Box New Old Stock, tested and working. Box is very worn and deformed from storage
