Tornek-Rayville TR-900 Dive Watch, c. 1964, rare stainless steel water-resistant antimagnetic dive watch produced for the U.S. Navy Underwater Demolition Team, now known as the Navy SEALs, with the assistance from importer Allen V. Tornek Co. of New York, with sweep center seconds, moisture indicator and Promethium-147 lume, bidirectional revolving black bezel with luminous unit indication, two-part screw-back engraved with military markings, “MIL-W-22176,” movement marked “Seventeen (17) Jewels Tornek-Rayville No. TR-900,” with brass dust cover, dia. 40 m