Beautifully engraved certificate from the Submarine Signal Company issued in 1907-1944. The company merged into Raytheon in 1946. This historic document was printed by the American Banknote Company and has an ornate border around it with a vignette of a ship at sea. This item is hand signed by the Company's President and Treasurer and is over 57 years old.
Certificate Vignette
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Certificate Vignette