Abacuses, also called “counting frames,” date back earlier than the 14th century as the primary way of calculating and making the maths. Modern school abacuses, like this one, feature a vertical bead frame and is used to represent numbers without the need of a place value. They are most commonly used nowadays as toys to help kids learn to count.
This vintage abacus is in perfect shape with a beautiful natural patina. Come check it out!
From seller, Krrb.com/brooklynreclamation