The P-35 was first single-seat, all-metal pursuit aircraft with retractable gear and enclosed cockpit to go into regular service with the Army Air Corps, and 76 were accepted in 1937-38. Ironically, the Japanese Navy ordered 20 of a two-seat version, becoming the only US-built aircraft used operationally by Japan in WW2. Sweden also bought 60 improved EP-106s, known as J 9s. This aircraft is actually 36-404, displayed as the P-35A of the 35th Pursuit Squadron commander stationed in the Philippines in 1941. It is the only surviving P-35, although two of the J 9s and an AT-12 still exist

This P-35 really is 36-404

A forerunner of the Republic P-47, the P-35 was the USAAC first production single-seat, all-metal pursuit plane with retractable landing gear and an enclosed cockpit. Of the 76 P-35s accepted into service, this example on display at the National Museum of the USAF is the only known survivor. It served with the 94th Pursuit Squadron, 1st Pursuit Group and is marked as the plane flown by the 17th Pursuit Squadron commander in the Philippines in the spring of 1941. Marked as P-35A 41-17449 in the TDB, but actual identity is USAAF 36-404 (a P-35).