A Longines Hour Angle Lindbergh Ref: 989.5215 Model: 989.5215 Serial: 24725028 Year: 1993 Case Material: Steel Case diameter: 38mm Dial: Blue and silver Numerals: Roman Movement: Automatic Functions: Latitude marking bezel Strap: Black leather Buckle: Pin Box: Yes Papers: Yes The Longines Lindbergh Hour Angle commemorates the historic Lindbergh flight. The original watch was designed by Col. Charles A. Lindbergh as a navigational aid for pilots. Used in conjunction with a sextant, a nautical almanac and a radio set for receiving the time signal, it made possible the rapid determination of the Greenwich hour angle, i.e., longitude. The watch appears to be in good working order, no long-term tests have been performed and accuracy cannot be guaranteed, a full service is advised on all watches and pocket watches once purchased. Surface scratches & wear consistent with age The online condition report may not mention mechanical replacements or imperfections to the movement, case, dial, pendulum, separate base(s) or dome. Watches with water-resistant cases may have been opened to examine movements, but no warranties are given regarding their water resistance. It is also important to note that we cannot guarantee the authenticity or originality of individual components, such as wheels, hands, crowns, crystals, screws, bracelets, and wrist bands, since subsequent repairs and restoration may have changed the original components. Also, we cannot guarantee the authenticity or originality of any engraving or re-engraving on watch cases, case backs, bracelets, straps or internal movements.