50-Year Calendar, Polished
Brass A simple, vintage pocket calculator, dating from a time when 50 years was synonymous with perpetuity. Its origins date back some 500 years. It allows you to work out the day of the week for any given future date, over a 50-year period. To use it, simply turn the dial until the selected year is aligned with the selected month. Locate the specific date and find the day of the week above it.
Origin: Asian
Condition: New
Materials: Brass
Dimensions: Height 1 x diameter 5.5 cm