Arithmometer by Thomas in Colmar
Beautiflu arithmometer by Thomas in Colmar.
8-figures 1860 model signed "Invente par Thomas de Colmar a Paris".
One of the first arithmometer by Thomas in Colmar in good working condition.
Thomas was the inventor of the first calculating machines sold during the second half of the 19th century.
After his death in 1870, he was copied by manufacturers all around the world.
