This vintage Citizen Model 800R calculator from 1973 is a rare find for collectors and enthusiasts. With its travel zipper case, it makes for a great addition to any vintage electronics collection. The calculator is in working condition and has been well-maintained over the years. It is a perfect example of the high-quality craftsmanship that Citizen is known for. This calculator is sure to bring back fond memories for those who remember using it back in the day.