This prop has been hand-polished to illuminate the true finish of the metal. The Grumman S-2 Tracker was first introduced in the 1950s, and was utilized by navies around the world, primarily in the US, Canada, Australia, Japan, Argentina, and Brazil. The Tracker was intended as a replacement for the Grumman AF Guardian, which was the first purpose-built aircraft system for ASW, using two airframes for two versions, one with the detection gear, and the other with the weapon systems. The Tracker combined both functions in one aircraft. The Grumman S-2 Tracker (previously S2F prior to 1962) was the first single airframe anti-submarine warfare (ASW) aircraft to enter service with the U.S. Navy. Designed and initially built by Grumman, the Tracker was of conventional design with twin reciprocating propeller engines, a high wing and tricycle undercarriage. The Tracker was eventually superseded in U.S. military service by the Lockheed S-3 Viking; the last USN Tracker operational squadron (VS-37 with S-2G models) was disestablished in 1976. The last Navy S-2 was withdrawn from service on 29 August 1976. This vintage prop offers a reflective surface that would look great in even the most contemporary design.