New Old Stock Engine Saddle Mount Starter Switch - Button for International, McCormick-Deering, and IH Farmall A,  B,  C,  Cub,  Cub LoBoy,  Super A,  AV,  Super C,  H,  HV,  Super H,  HV,  Super M,  MV,  Super W6,  WD6,  100,  130,  140,  200,  and 230 Tractors.

Manufactured by Delco Remy.

Came from a dealership liquidation.

Delco and Case IH Saddle Mount Starter Switch part numbers: E7392,  1918405,  1932131,  593292C1,  1925781.

Referred to also as a Saddle Starter Switch and mounts on the starter as shown in the last photo.