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:

♕♕♕ RARE - Leather Case Canister CURTA Calculator TYPE I - GOOD STATE ♕♕♕
♕♕♕ RARE - Leather Case Canister CURTA Calculator TYPE I - GOOD STATE ♕♕♕
$249.00
Time Remaining: 11d 19h 42m
Buy It Now for only: $249.00

CURTA Type 1 Calculator (Serial #34917 - 1957) w/ original metal case (Contina)
CURTA Type 1 Calculator (Serial #34917 - 1957) w/ original metal case (Contina)
$1,199.00
Time Remaining: 9d 5h 46m
Buy It Now for only: $1,199.00

CURTA TYPE II Calculator COMPLETE SET w/ original box, case, manuals, NEVER USED
CURTA TYPE II Calculator COMPLETE SET w/ original box, case, manuals, NEVER USED
$1,695.00
Time Remaining: 1d 9h 56m
Buy It Now for only: $1,695.00

♕♕♕ RARE - CURTA Calculator TYPE II #526246- VERY GOOD STATE - 1964 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #526246- VERY GOOD STATE - 1964 ♕♕♕
$1,099.00
Time Remaining: 23d 3h 21m
Buy It Now for only: $1,099.00

♕♕♕ RARE - CURTA Calculator TYPE I #35494 - GOOD STATE - 1956 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #35494 - GOOD STATE - 1956 ♕♕♕
$999.00
Time Remaining: 17d 19h 33m
Buy It Now for only: $999.00

THE CURTA CALCULATOR POSTER
THE CURTA CALCULATOR POSTER
$19.95
Time Remaining: 13d 7h 49m
Buy It Now for only: $19.95

♕♕♕ RARE - Early CURTA Calculator TYPE II #506874 - GOOD STATE - 1955 ♕♕♕
♕♕♕ RARE - Early CURTA Calculator TYPE II #506874 - GOOD STATE - 1955 ♕♕♕
$1,299.00
Time Remaining: 23d 3h 17m
Buy It Now for only: $1,299.00

♕♕♕ RARE - CURTA Calculator TYPE I NO SERIAL - NEAR MINT STATE - 1957 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I NO SERIAL - NEAR MINT STATE - 1957 ♕♕♕
$1,399.00
Time Remaining: 11d 19h 42m
Buy It Now for only: $1,399.00

THE CURTA GERMAN CALCULATOR POSTER
THE CURTA GERMAN CALCULATOR POSTER
$19.95
Time Remaining: 23d 19h 6m
Buy It Now for only: $19.95

♕♕♕ RARE - CURTA Calculator TYPE I #29921 - VERY GOOD STATE - 1955 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #29921 - VERY GOOD STATE - 1955 ♕♕♕
$1,199.00
Time Remaining: 17d 19h 32m
Buy It Now for only: $1,199.00

Rare Curta Calculator Hand Made Leather Cover (Limited Pieces)
Rare Curta Calculator Hand Made Leather Cover (Limited Pieces)
$300.00
Time Remaining: 13d 21m
Buy It Now for only: $300.00

♕♕♕ RARE - CURTA Calculator TYPE I #31423 - GOOD STATE - 1955 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE I #31423 - GOOD STATE - 1955 ♕♕♕
$999.00
Time Remaining: 24d 13h 54m
Buy It Now for only: $999.00

Rare Dark Brown Curta Calculator Handmade/ Handstiched Thick Leather Canister
Rare Dark Brown Curta Calculator Handmade/ Handstiched Thick Leather Canister
$349.00
Time Remaining: 16d 23h 55m
Buy It Now for only: $349.00

Vintage CURTA Type II MECHANICAL CALCULATOR & Case CONTINA LTD MAUREN
Vintage CURTA Type II MECHANICAL CALCULATOR & Case CONTINA LTD MAUREN
$799.00
Time Remaining: 7d 22h 12m

Curta Type 1 Calculator
Curta Type 1 Calculator
$510.00 (4 Bids)
Time Remaining: 3d 22h 5m

♕♕♕ RARE - Early CURTA Calculator TYPE I #4081 - VERY GOOD STATE - 1948 ♕♕♕
♕♕♕ RARE - Early CURTA Calculator TYPE I #4081 - VERY GOOD STATE - 1948 ♕♕♕
$1,799.00
Time Remaining: 14d 15h 15m
Buy It Now for only: $1,799.00

curta type ii calculator excellent quality 1960's before pre-electronics
curta type ii calculator excellent quality 1960's before pre-electronics
$1,350.00
Time Remaining: 11d 5h 44m
Buy It Now for only: $1,350.00

Vinatge 1951 Curta Type I Calculator No. 15062 - MINT w/ Original Box and Manual
Vinatge 1951 Curta Type I Calculator No. 15062 - MINT w/ Original Box and Manual
$1,800.00
Time Remaining: 6d 3h 12m
Buy It Now for only: $1,800.00

Curta Calculator Handmade Old Leather Canister Very Collectible - LIMITED PIECES
Curta Calculator Handmade Old Leather Canister Very Collectible - LIMITED PIECES
$349.00
Time Remaining: 17d 8m
Buy It Now for only: $349.00

♕♕♕ RARE - CURTA Calculator TYPE II #514414 - Near MINT STATE - 1960 ♕♕♕
♕♕♕ RARE - CURTA Calculator TYPE II #514414 - Near MINT STATE - 1960 ♕♕♕
$1,999.00
Time Remaining: 18d 17h 55m
Buy It Now for only: $1,999.00

Beautiful Black Leather Case Canister of Curta Calculator - Limited Pieces..!!!
Beautiful Black Leather Case Canister of Curta Calculator - Limited Pieces..!!!
$349.00
Time Remaining: 17d 23m
Buy It Now for only: $349.00

Curta Calculator Patents Full-Image on CD-ROM
Curta Calculator Patents Full-Image on CD-ROM
$19.45
Time Remaining: 29d 23h 14m
Buy It Now for only: $19.45

Curta Calculator Type II w/ Leather Case, Manuals SN 518562 SCCA Racer, Surveyor
Curta Calculator Type II w/ Leather Case, Manuals SN 518562 SCCA Racer, Surveyor
$1,600.00
Time Remaining: 16d 5h 39m
Buy It Now for only: $1,600.00

Beautiful Decorative Curta Calculator Handmade Thick Leather Case LIMITED PIECES
Beautiful Decorative Curta Calculator Handmade Thick Leather Case LIMITED PIECES
$349.00
Time Remaining: 16d 23h 50m
Buy It Now for only: $349.00

« Previous12
Permalink