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:

♕♕♕ CURTA Calculator TYPE II #529408 - VERY GOOD CONDITION ♕♕♕
♕♕♕ CURTA Calculator TYPE II #529408 - VERY GOOD CONDITION ♕♕♕
$935.00
Time Remaining: 15h 15m

THE CURTA CALCULATOR POSTER
THE CURTA CALCULATOR POSTER
$19.95
Time Remaining: 19d 15h 49m
Buy It Now for only: $19.95

Working 1957 Curta Calculator Type II  With Metal Can & Instructions !! Nice !!
Working 1957 Curta Calculator Type II With Metal Can & Instructions !! Nice !!
$2,000.00
Time Remaining: 7d 22h 27m
Buy It Now for only: $2,000.00

VERY RARE AND EXCEPTIONAL C.1952 Curta Type 1 Calculator #19598 W/ Original Case
VERY RARE AND EXCEPTIONAL C.1952 Curta Type 1 Calculator #19598 W/ Original Case
$1,200.00
Time Remaining: 17d 10h 5m
Buy It Now for only: $1,200.00

Fantastic early mechanical Type I CURTA CALCULATOR with instructions, 1968
Fantastic early mechanical Type I CURTA CALCULATOR with instructions, 1968
$761.01 (20 Bids)
Time Remaining: 21h 48m

Curta Calculator Type II
Curta Calculator Type II
$1,199.99
Time Remaining: 8d 15h 38m
Buy It Now for only: $1,199.99

EXCEPTIONAL Curta Type 1 Calculator Mint Condition 66816
EXCEPTIONAL Curta Type 1 Calculator Mint Condition 66816
$2,995.00
Time Remaining: 21d 21h 40m
Buy It Now for only: $2,995.00

CURTA TYPE 1 CALCULATOR #72867-CONTINA AG MAUREN-WORKS GREAT-Case melted some
CURTA TYPE 1 CALCULATOR #72867-CONTINA AG MAUREN-WORKS GREAT-Case melted some
$650.00
Time Remaining: 2d 18h

CURTA Type 1 # 28218 Calculator by Contina AG Muren System Curt Herzstark w Case
CURTA Type 1 # 28218 Calculator by Contina AG Muren System Curt Herzstark w Case
$1,000.00
Time Remaining: 1d 20h 32m
Buy It Now for only: $1,300.00

Curta Calculator Patents Full-Image on CD-ROM
Curta Calculator Patents Full-Image on CD-ROM
$19.95
Time Remaining: 8d 13h 11m
Buy It Now for only: $19.95

Vintage C.1954 Curta Type 1 Calculator w/ Case
Vintage C.1954 Curta Type 1 Calculator w/ Case
$1,399.00
Time Remaining: 25d 13h 1m
Buy It Now for only: $1,399.00

CURTA TYPE II CALCULATOR in NEAR MINT STATE, #528951 w/ metal can and 2 manuals
CURTA TYPE II CALCULATOR in NEAR MINT STATE, #528951 w/ metal can and 2 manuals
$1,495.00
Time Remaining: 22h 45m
Buy It Now for only: $1,495.00

RARE EARLY 1954 ALL BLACK CURTA Type II Calculator, Low #504405 -w/can+2 manuals
RARE EARLY 1954 ALL BLACK CURTA Type II Calculator, Low #504405 -w/can+2 manuals
$1,695.00
Time Remaining: 3d 22h 16m
Buy It Now for only: $1,695.00

♕♕♕ RARE - BOXED CURTA Calculator TYPE I #49750 - VERY GOOD Cond - 1962 ♕♕♕
♕♕♕ RARE - BOXED CURTA Calculator TYPE I #49750 - VERY GOOD Cond - 1962 ♕♕♕
$1,299.00
Time Remaining: 13d 8h 19m
Buy It Now for only: $1,299.00

c.1957 Vintage Type 1 Curta Calculator in Original Canister - No.37361
c.1957 Vintage Type 1 Curta Calculator in Original Canister - No.37361
$1,157.91
Time Remaining: 22d 7h 27m
Buy It Now for only: $1,157.91

VERY RARE AND EXCEPTIONAL C.1954 Curta Type 1 Calculator #27713 W/ Original Case
VERY RARE AND EXCEPTIONAL C.1954 Curta Type 1 Calculator #27713 W/ Original Case
$1,199.99
Time Remaining: 5d 8h 11m
Buy It Now for only: $1,199.99

♕♕♕ RARE - BOXED CURTA Calculator TYPE I #68569 - VERY GOOD Cond - 1967 ♕♕♕
♕♕♕ RARE - BOXED CURTA Calculator TYPE I #68569 - VERY GOOD Cond - 1967 ♕♕♕
$1,299.00
Time Remaining: 13d 8h 25m
Buy It Now for only: $1,299.00

♕♕♕ RARE - Leather Case Canister CURTA Calculator TYPE I - VERY GOOD STATE ♕♕♕
♕♕♕ RARE - Leather Case Canister CURTA Calculator TYPE I - VERY GOOD STATE ♕♕♕
$199.00
Time Remaining: 28d 5h 6m
Buy It Now for only: $199.00

♕♕♕ RARE - Early CURTA Calculator TYPE II #505009 - VERY GOOD STATE - 1954 ♕♕♕
♕♕♕ RARE - Early CURTA Calculator TYPE II #505009 - VERY GOOD STATE - 1954 ♕♕♕
$1,299.00
Time Remaining: 21d 10h 25m
Buy It Now for only: $1,299.00

RARE - Sticker CURTA Calculator TYPE I or TYPE II CANISTER - Case - Autocollant
RARE - Sticker CURTA Calculator TYPE I or TYPE II CANISTER - Case - Autocollant
$24.99
Time Remaining: 4d 7h 9m
Buy It Now for only: $24.99

Curta TYPE I Calculator
Curta TYPE I Calculator
$999.00
Time Remaining: 21d 18h 5m
Buy It Now for only: $999.00

RARE - O-ring for CURTA Calculator TYPE I or TYPE II - Joint Dichtungsring Oring
RARE - O-ring for CURTA Calculator TYPE I or TYPE II - Joint Dichtungsring Oring
$14.99
Time Remaining: 17d 13h 41m
Buy It Now for only: $14.99

CURTA Type 1 Calculator Made in Liechtenstein
CURTA Type 1 Calculator Made in Liechtenstein
$2,440.00
Time Remaining: 13d 7h 25m
Buy It Now for only: $2,440.00

CURTA Type 2 Calculator Made in Liechtenstein
CURTA Type 2 Calculator Made in Liechtenstein
$2,870.00
Time Remaining: 13d 7h 23m
Buy It Now for only: $2,870.00

« Previous12
Permalink