Full Details

Name and Model Number Curta Calculator Model II
Country of Origin Lichtenstein
Date of Manufacture 1946-1960
Capacity Setting register =11, Counter register = 8, Result register = 15
Construction Metal
Area of Use Generic
Comment A series of rotating internal rods reflecting answers on the external registers.
This example has a leather case as well as a metal "can" to protect the calculator.
This model was very popular for field work such as surveying. .
Rarity RR
Donor Collection of Clay Castleberry
Match Number 393
(Click Picture for Details)

In conjunction with our 'donors' we assign a rarity rating to each item, based on the system devised by Herman van Herwijnen
(1929 - 2004), renowned Dutch collector, author, and creator of Herman's Archive, a collection of 5,000 slide rule images on CD.
• RR = Rare - 1 of 25 collectors has one; it may take a year to find an example in the marketplace.
• RRR = Very Rare - only a few known to collectors; may be several years before it comes up for sale.
• RRRR = Extremely Rare - a museum piece; unlikely that an example will come up for sale.