Vintage Lindbergh Spirit of ST. LOUIS MARK IV Field Phone Telephone – S.O.S.L. Vintage S.O.S.L. ST. LOUS MARK IV Field Telephone! Great addition to any telephone collection! PLEASE VIEW PICS CAREFULLY There are signs of wear as well as a few missing edge brackets. There are a few spots where repair screws were used. Would look great with a little cleanup and some restoration. Decent condition for its age!