About Curta Calculators

A Curta Calculator

A Curta Calculator

What is a Curta Calculator?

A Curta Calculator is a hand-cranked mechanical calculator that fits in the palm of your hand. It was originally sold in 1948 and performs addition, subtraction, multiplication & division operations, With some skill, it is even possible to compute advanced mathematics such as square roots and other operations.

What's amazing about a Curta Calculator is that the entire device operates completely on mechanical power without any electricity to accurately compute an equation. The Curta Calculator utilizes a symphony of gears, sliders & drums to find the solution. Considering it predated most computers, the Curta Calculator is an amazing piece of collectible period engineering.

For a demonstration of the operation of a Curta Calculator, we suggest you check out this video.

Curta Calculators were made in two distinct models: Type 1 and Type 2.

  • Type 1 Curta Calculators are the smaller of the two models and are made of either plastic or metal. Type 1 Curta Calculator models have 8 input registers, a 6 digit crank turn register, and an 11 digit result register. They weigh approximately 8 ounces and were originally sold with a plastic or metal carrying case.
  • Type 2 Curta Calculators are the larger of the two models and are made of either plastic or metal. Type 2 Curta Calculator models have 11 input registers, a 8 digit crank turn register, and an 15 digit result register. They weigh approximately 12 ounces and were originally sold with a plastic or metal carrying case.

Generally, earlier models featured more metal parts than their later counterparts.

Since their introduction, an estimated 140,000 Curta Calculators were made and sold until the early 1970s, when electronic calculators became available. Fortunately, it's still possible to purchase a vintage Curta calculator today. Where? Why the internet of course!

Here are current Curta Calculator listings on eBay:

ORIGINAL CURTA TYPE II CALCULATOR & ORIGINAL CANISTER in MINT CONDITION
ORIGINAL CURTA TYPE II CALCULATOR & ORIGINAL CANISTER in MINT CONDITION
$701.53
Time Remaining: 1d 19h 8m
Buy It Now for only: $912.00

early (1954) Type II Curta Calculator
early (1954) Type II Curta Calculator
$1,100.00
Time Remaining: 11d 14h 46m
Buy It Now for only: $1,100.00

♕♕♕ RARE - CURTA Calculator TYPE I #10962 - GOOD STATE - 1950 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #10962 - GOOD STATE - 1950 ♕♕♕
$999.00
Time Remaining: 22d 12h 31m
Buy It Now for only: $999.00

THE CURTA CALCULATOR POSTER
THE CURTA CALCULATOR POSTER
$19.95
Time Remaining: 11d 11h 16m
Buy It Now for only: $19.95

♕♕♕ RARE - CURTA Calculator TYPE I #25194 - GOOD STATE - 1954 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #25194 - GOOD STATE - 1954 ♕♕♕
$999.00
Time Remaining: 22d 12h 36m
Buy It Now for only: $999.00

♕♕♕ RARE - LATE CURTA Calculator TYPE II #554135 - VERY GOOD STATE - 1969 ♕♕♕
♕♕♕ RARE - LATE CURTA Calculator TYPE II #554135 - VERY GOOD STATE - 1969 ♕♕♕
$1,099.00
Time Remaining: 6d 12h 13m
Buy It Now for only: $1,099.00

Extremely Rare Curta Calculator Type II # 529883 1964 Mint State Free Shipping
Extremely Rare Curta Calculator Type II # 529883 1964 Mint State Free Shipping
$1,300.00
Time Remaining: 9d 16h 23m
Buy It Now for only: $1,300.00

♕♕♕ RARE - Leather Case Canister CURTA Calculator TYPE I - VERY GOOD STATE ♕♕♕
♕♕♕ RARE - Leather Case Canister CURTA Calculator TYPE I - VERY GOOD STATE ♕♕♕
$299.00
Time Remaining: 15d 6h 43m
Buy It Now for only: $299.00

Curta Type I Calculator With Canister #34058, Semi-Prime, 1956 Great Condition.
Curta Type I Calculator With Canister #34058, Semi-Prime, 1956 Great Condition.
$1,149.00
Time Remaining: 4d 21h 29m

♕♕♕ RARE - CURTA Calculator TYPE II #521228 - VERY GOOD STATE - 1962 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #521228 - VERY GOOD STATE - 1962 ♕♕♕
$1,099.00
Time Remaining: 10d 8h 37m
Buy It Now for only: $1,099.00

♕♕♕ RARE - CURTA Calculator TYPE II #527346 - VERY GOOD STATE - 1964 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #527346 - VERY GOOD STATE - 1964 ♕♕♕
$1,199.00
Time Remaining: 27d 33m
Buy It Now for only: $1,199.00

♕♕♕ RARE - Early CURTA Calculator TYPE I #3116 - VERY GOOD STATE - 1948 ♕♕♕
♕♕♕ RARE - Early CURTA Calculator TYPE I #3116 - VERY GOOD STATE - 1948 ♕♕♕
$2,999.00
Time Remaining: 22d 12h 26m
Buy It Now for only: $2,999.00

♕♕♕ RARE - CURTA Calculator TYPE II #523927 - VERY GOOD STATE - 1963 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #523927 - VERY GOOD STATE - 1963 ♕♕♕
$1,299.00
Time Remaining: 27d 11h 57m
Buy It Now for only: $1,299.00

CURTA Calculator Machine # 36434 Manufactured March 1957. Instructions papers
CURTA Calculator Machine # 36434 Manufactured March 1957. Instructions papers
$1,695.00
Time Remaining: 12h 33m
Buy It Now for only: $1,695.00

♕♕♕ RARE - Early CURTA Calculator TYPE I #6465 - VERY GOOD STATE - 1949 ♕♕♕
♕♕♕ RARE - Early CURTA Calculator TYPE I #6465 - VERY GOOD STATE - 1949 ♕♕♕
$1,999.00
Time Remaining: 10d 8h 36m
Buy It Now for only: $1,999.00

♕♕♕ RARE - LATE CURTA Calculator TYPE I #73910 - VERY GOOD STATE - 1969 ♕♕♕
♕♕♕ RARE - LATE CURTA Calculator TYPE I #73910 - VERY GOOD STATE - 1969 ♕♕♕
$1,199.00
Time Remaining: 16d 10h 45m
Buy It Now for only: $1,199.00

CURTA CALCULATOR TYPE 1 57897 WITH CASE & INSTRUCTIONS & 50 PAGE BOOKLET
CURTA CALCULATOR TYPE 1 57897 WITH CASE & INSTRUCTIONS & 50 PAGE BOOKLET
$899.00
Time Remaining: 6d 15h 10m

♕♕♕ RARE - LATE CURTA Calculator TYPE I #66765 - VERY GOOD STATE - 1967 ♕♕♕
♕♕♕ RARE - LATE CURTA Calculator TYPE I #66765 - VERY GOOD STATE - 1967 ♕♕♕
$1,199.00
Time Remaining: 16d 10h 38m
Buy It Now for only: $1,199.00

♕♕♕ RARE - Early CURTA Calculator TYPE II #508615 - MINT STATE - 1956 ♕♕♕
♕♕♕ RARE - Early CURTA Calculator TYPE II #508615 - MINT STATE - 1956 ♕♕♕
$1,799.00
Time Remaining: 15d 7h 31m
Buy It Now for only: $1,799.00

♕♕♕ RARE - CURTA Calculator TYPE I #63726 - VERY GOOD STATE - 1966 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #63726 - VERY GOOD STATE - 1966 ♕♕♕
$1,699.00
Time Remaining: 15d 9h 43m
Buy It Now for only: $1,699.00

♕♕♕ RARE - Early CURTA Calculator TYPE II #514414 - MINT STATE - 1960 ♕♕♕
♕♕♕ RARE - Early CURTA Calculator TYPE II #514414 - MINT STATE - 1960 ♕♕♕
$3,999.00
Time Remaining: 15d 7h 10m
Buy It Now for only: $3,999.00

THE CURTA GERMAN CALCULATOR POSTER
THE CURTA GERMAN CALCULATOR POSTER
$19.95
Time Remaining: 24d 9h 1m
Buy It Now for only: $19.95

♕♕♕ RARE - CURTA Calculator TYPE II #532076- MINT STATE - 1965 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #532076- MINT STATE - 1965 ♕♕♕
$1,599.00
Time Remaining: 15d 7h 38m
Buy It Now for only: $1,599.00

♕♕♕ RARE - CURTA Calculator TYPE II #532762 - MINT STATE - 1965 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #532762 - MINT STATE - 1965 ♕♕♕
$1,799.00
Time Remaining: 15d 6h 51m
Buy It Now for only: $1,799.00

« Previous12
Permalink