An addiator arithma is a very wierd name for a mechanical abacus.  We have the addiator, stylus, instructions and plastic case.  It works.  These were very popular in the 50's when calculators weren't around, or available to families.  It is in very good condition.  It has been in a smoke free home.

Reference #cm-7.

We are required to collect 6% Pennsylvania Sales Tax at checkout.

Thanks for stopping by!