The Adding Machine The Jewel iHorn is an

The Jewel iHorn is an early 1900’s time switch

With its line of automatic telephone exchanges

The Berko is a one of a kind iHorn

The bell of the horn is rubber

This model is particularly rare and collectible

The Adding Machine The Jewel iHorn is anThe Adding Machine iHORN is made from an antique American Adding Machine coupled with a fox hunting horn. It was patented in 1912. This lever set non printing manually operated adding machine has an etched steel case painted black. Seven levers move in circular arcs between slots in the case. The case is painted along the edges of the slots with the digits from 0 to 9 (large and in black and white) and 9 to 0 (small and in red). The large digits are