This listing is for a vintage R.C. Allen adding machine, a classic mechanical calculator from a known historical brand. It is offered with free shipping. As a collectible or functional piece for enthusiasts, it can serve as a unique desk item, a tool for learning about mechanical computation, or a gift for those interested in vintage office equipment. Please note this is a used vintage item. Its specific operational condition, cosmetic appearance, and any included accessories are not detailed here. We recommend carefully reviewing all photos and the full seller's description to assess its current state and completeness before purchase. Check the listing for full details. Vintage R.C. Allen Adding Machine. Listed at 50.00 USD. **needs new ink but faintly puts the numbers on the paper as i tried to picture***The Vintage R.C. Allen Adding Machine is a rare and valuable piece of antique machinery that would have been used in a mercantile or industrial setting. This adding machine, designed by R.C. Allen, showcases advanced technology for its time and would have been essential for keeping precise calculations in various businesses. With its historical significance and unique design, this adding machine would make a prized possession for any collector of vintage office equipment or industrial artifacts.