Manufactured by Herzstark &
Co. circa 1906 serial number
1837 The Austria was
manufactured by Herzstark & Co. circa 1906. This stepped
drum machine (serial number 1837) has 18 places in the
result mechanism, 9 places in the setting mechanism, and 9
places in the revolution counter. When the crank is turned,
the result register is locked down, as is the slide lever
that switches the machine between addition and
subtraction. When depressed, the large
lever on the left lifts the result register. Once lifted,
the register is automatically pulled one digit to the left
or right by a spring-loaded pulley at the rear of the
machine.