A stainless steel sweep seconds aviator´s hour´s angle wristwatch, Longines, 'Lindbergh' circa 1947

nickel lever movement, 17 jewels, mono-metallic compensation balance, silvered dial, roman numerals, inner revolving disc calibrated from 1-15 and 0-60, chapter ring calibrated 0-180, revolving bezel calibrated for 150 degrees, case, dial and movement signed, with original Longines leather strap and silver buckle.