with Rare Constants Adapter, 1893
Rare Swiss calculating machine for all 4 basic arithmetic operations by Otto Steiger, St. Gallen,
Switzerland. Manufactured by Hans W. Egli, Zurich, Switzerland, in approved Swiss quality. Instructions inside the metal lid. Serial no. 4005.
With matching wooden table! Important collector's item for any ambitious collection!
Reserve: 2.200/US$ 2,970