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:

Early CURTA Calculator TYPE II  2  #545777 -  MINT STATE!!
Early CURTA Calculator TYPE II 2 #545777 - MINT STATE!!
$999.00 (1 Bid)
Time Remaining: 12h 48m

THE CURTA CALCULATOR POSTER
THE CURTA CALCULATOR POSTER
$19.95
Time Remaining: 29d 12h 4m
Buy It Now for only: $19.95

♕♕♕ RARE - CURTA Calculator TYPE I #15255 - GOOD STATE - 1951 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #15255 - GOOD STATE - 1951 ♕♕♕
$999.00
Time Remaining: 20d 11h 47m
Buy It Now for only: $999.00

Vintage Rare 1960 Curta Type II Manual Calculator w/ original case
Vintage Rare 1960 Curta Type II Manual Calculator w/ original case
$1,299.99
Time Remaining: 6d 20h 41m
Buy It Now for only: $1,299.99

Rare Late Curta Calculator Type 1
Rare Late Curta Calculator Type 1
$2,100.00
Time Remaining: 3d 10h 51m
Buy It Now for only: $2,100.00

THE CURTA GERMAN CALCULATOR POSTER
THE CURTA GERMAN CALCULATOR POSTER
$19.95
Time Remaining: 12d 9h 49m
Buy It Now for only: $19.95

♕♕♕ 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: 3d 7h 31m
Buy It Now for only: $299.00

CURTA Calculator 1966 Type 1 No. 62387 with Plastic and Leather Case
CURTA Calculator 1966 Type 1 No. 62387 with Plastic and Leather Case
$510.00 (10 Bids)
Time Remaining: 4d 19h 16m

♕♕♕ RARE - CURTA Calculator TYPE I #25194 - GOOD STATE - 1954 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #25194 - GOOD STATE - 1954 ♕♕♕
$999.00
Time Remaining: 10d 13h 25m
Buy It Now for only: $999.00

♕♕♕ UNIQUE !!! RARE - Wooden Box for CURTA Calculators TYPE II - GOOD STATE ♕♕♕
♕♕♕ UNIQUE !!! RARE - Wooden Box for CURTA Calculators TYPE II - GOOD STATE ♕♕♕
$999.00
Time Remaining: 9d 12h 28m
Buy It Now for only: $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: 15d 12h 46m
Buy It Now for only: $1,299.00

♕♕♕ 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: 4d 11h 26m
Buy It Now for only: $1,199.00

♕♕♕ RARE - CURTA Calculator TYPE II #532076- MINT STATE - 1965 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #532076- MINT STATE - 1965 ♕♕♕
$1,599.00
Time Remaining: 3d 8h 27m
Buy It Now for only: $1,599.00

Curta Type II Manual Calculator by Contina Ltd Mauren
Curta Type II Manual Calculator by Contina Ltd Mauren
$399.00 (1 Bid)
Time Remaining: 5d 18h 13m

♕♕♕ 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: 3d 7h 59m
Buy It Now for only: $3,999.00

♕♕♕ RARE - CURTA Calculator TYPE II #532762 - MINT STATE - 1965 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #532762 - MINT STATE - 1965 ♕♕♕
$1,799.00
Time Remaining: 3d 7h 39m
Buy It Now for only: $1,799.00

♕♕♕ 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: 28d 9h 24m
Buy It Now for only: $1,999.00

♕♕♕ RARE - VERY LATE CURTA Calculator TYPE I #80119 - MINT STATE - 1970 ♕♕♕
♕♕♕ RARE - VERY LATE CURTA Calculator TYPE I #80119 - MINT STATE - 1970 ♕♕♕
$1,599.00
Time Remaining: 3d 8h 36m
Buy It Now for only: $1,599.00

♕♕♕ 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: 3d 10h 31m
Buy It Now for only: $1,699.00

♕♕♕ 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: 10d 13h 14m
Buy It Now for only: $2,999.00

Curta calculator
Curta calculator
$995.00 (9 Bids)
Time Remaining: 6d 14h 56m

CURTA CALCULATOR SERVICE MODEL II MANUAL IN GERMAN
CURTA CALCULATOR SERVICE MODEL II MANUAL IN GERMAN
$19.95
Time Remaining: 8d 21h 18m
Buy It Now for only: $19.95

♕♕♕ RARE - Early CURTA Calculator TYPE II #506154 - MINT STATE - 1955 ♕♕♕
♕♕♕ RARE - Early CURTA Calculator TYPE II #506154 - MINT STATE - 1955 ♕♕♕
$3,999.00
Time Remaining: 3d 8h 11m
Buy It Now for only: $3,999.00

CURTA II Rechenmaschine Calculator #543527 (I370)
CURTA II Rechenmaschine Calculator #543527 (I370)
$1,355.00
Time Remaining: 25d 3h 58m
Buy It Now for only: $1,355.00

« Previous12
Permalink