Alan Barclay of California recently donated a Millionaire mechanical calculator, that was his father's, It also includes a stand fabricated by his father as a desk.

The Millionaire was the first commercially successful mechanical calculator that could perform a direct multiplication. It was in production from 1893 to 1935 with a total of about five thousand machines manufactured.

It was commercialized as "The Millionaire" in English speaking countries, "La Millionnaire" in French and "Millionär" in German speaking countries.

https://en.wikipedia.org/wiki/The_Millionaire_(calculator)