Check the listing for details. BRUNSVIGA Nova 13 VINTAGE MECHANICAL CALCULATOR Pinwheel adding machine. Listed at 200.00 USD. This Brunsviga Nova 13 vintage mechanical calculator is a true gem for collectors and enthusiasts of antique adding machines. With its pinwheel mechanism and sturdy construction, this machine is a testament to the quality and craftsmanship of the past. The Brunsviga brand is well-known for producing some of the most reliable and efficient calculators of its time, and this Nova 13 model is no exception. Ideal for display or actual use, this calculator is a great addition to any antique collection. Its intricate details and historic value make it a fascinating piece of technology, and its functionality is still impressive even by modern standards. Don't miss the chance to own a piece of history with this Brunsviga Nova 13 vintage mechanical calculator. Serial Number 127692 - As is.