Authentic Models · Health & Beauty
Authentic Models 40-Year Calander Comp ,Brass
€79.00
Out of stock
Prices last checked 2 Nov 2026, 10:58 UTC. Delivery and checkout conditions apply.
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Franks Beauty
Out of stock · Checked 2 Nov 2026, 10:58 UTC
About this product
An early, simple pocket calculator from an era when 40 years were akin to perpetual. Its origin goes back some 500 years. Calculate the day of the week for any given future date, within a 40-year span. To use, simply rotate dial until the selected year lines up with the selected month. Locate the particular date and find the day of the week above it.