Type and Age of your Curta |
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Type, Date of manufacturing and other data of your Curta.
This is the most precise dating method of the Curta developed until now, based on the original production records of Contina AG.
Enter the serial number and you will see the Type and Manufacture Date of the machine. Also, you will see more data and features of your Curta... including TRUE pictures!
I have a database of 2300+ Curtas (*) representing just over 1,5% of the total production run but if you bought your Curta in recent years in eBay, MercadoLibre and other major sites, it is highly likely that you may see true pictures of your Curta!
Please enter the serial number of your Curta and press Compute or see some recommendations below.
| Basic data: | ||||
| Serial Number: | ||||
| Production Number: | ||||
| Type: | ||||
| Date of manufacture: | ||||
| Age: | ||||
| Precision of registers: | ||||
| Additional data of your Curta (*): | ||||
| Color of the body: | ||||
| Style of setting knobs: | ||||
| Style of operating handle: | ||||
| Style of the Canister: | ||||
| Curious data of the Serial Number : (for Curtas Type 1 and 2, not 1a): | ||||
| Type of Number: | Is this Serial Number? | Previous Serial Number | Next Serial Number | Curtas of this type |
| Prime number | ||||
| Twin Prime number | ||||
| Palindromic number | ||||
| Fibonacci number | ||||
| Perfect number | ||||
| True pictures of your Curta: (Click on the thumbnail for a full size image) |
I recommend to you to see some Curtas of the database:
| Demo Curta: | 18557, 24558, 26197, 35177, 78882, 515935. |
| "Curta kit" to assembly: | 7625, 511170. |
| Special sticker/printing: | 25575. |
| Rare canister: | 500406, 508289. |
| Huge pictures: | 34034, 560963. |
| Out-of-focus pictures: | 4312, 74766. |
| Lower S/N of Type 1: | 923, 1904. |
| Lower S/N of Type 2: | 500073, 500225. |
| Higher S/N of Type 1: | 80380, 80358. |
| Higher S/N of Type 2: | 561589, 561532. |
(*) This information is based on a large database of Curtas (see facts below) sold in the internet in recent years.
There may be several listings of the same Curta, so you can see differents series of pictures of the same Curta in
differents styles, sizes and qualities. Images are not retouched in any way, in some cases rotated for a better view.
Also, I remove pictures not related with the spirit of this page: Just show Curtas!.
Please take this info only as a reference, there may be some unintentional inconsistences or mistakes in the original
listings or in my handling. If you think I may infringe any copyright or want I remove a particular Curta's pictures,
just tell me.
Database facts as May 8, 2013:
Curtas in database: Type I: 1153, Type II: 1186, Total: 2339.
Pictures in database: Type I: 7727, Type II: 8166, Total: 15893.
Manufacturing Date Calculator developed in collaboration with curta.li, Switzerland.
Public domain | Source of original production records of Contina AG: curta.li
Need more info about your Curta? Please try here:
The eBay Slide Rule Search from the Rod Lovett's Slide Rules website: An extensive list of Curtas, slide rules and other calculating devices sold on eBay in recent years. Contains the original eBay page and the original pictures. You can obtain the list of Curtas clicking here.
The CURTA Collectors and Registry Page from the Rick Furr's website vcalc.net "The Calculator Reference": More than 1,000 Curtas with information about its owners and some of the history of the machine.
The List of Curtas from curta.org "Your Complete Curta Calculator Site": A list of more than 1,000 Curtas with the owner's name and country, sorted by serial number.
The CURTA Stats from the Francis Teyssier's website: A list of 1,400 Curtas sold on eBay since 2006 with serial number, condition, date of sale, price, eBay transaction number and number of bids, sorted by serial number, date of sale or price. You can search in Google by transaction number to try to find more information.
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