This sale from my personally collection is for a. Rare, early, intermediate variation of.
Curta Type I mechanical calculator with low serial No 8189. Having been made in march 1951, in the early years of production of the Type I series, which started in the late 40s. This Curta calculator is a particularly interesting specimen as it incorporates features of early and later production models. Features of the very early designs of Curta calculators type I are.
The name CURTA written (with square letter A between signs of quotation) plus the inscription SYSTEM CURT HERZSTARK underneath. Early style me tal crank with no indicator arrow. Clearing ring shoulder screw rather than more common rivet. The original black oxide baseplate screws. Metal storage canister features the early style normal right.
Handed thread (it opens counterclockwise). However this curta calculator utilises the narrow rectangular setting knobs with teeth of the later design. This variation was only produced for a short period. Very clean and the whole mechanism runs like swiss clockwork.It operates correctly in every way even with negative crank turns, the ten-carrying mechanism works correctly in every position of the carriage. As can be seen in the photographs, this fine instrument has been well kept and it's showing signs of use. For the sake of completeness, it should be mentioned that there is a small, faintly visible vertical engraving on the housing B. This can be seen in one of the photos.
This Curta is an early, all metal Type I without any plastic parts. Means this Curta contains only metal parts, also the crank and clearing lever are made of metal. Later on, in the mid 1960s, the Type I were only supplied with plastic cranks and plastic clearing levers. This Curta calculator comes with. I ts original metal can with right-hand thread and following.New, high quality reproduction manuals. The Curta operation instructions in English (46 pages). The Curta computing examples in English (51 pages).
The fold-out 20-page operating manual in English "Your Curta Calculator". This is an opportunity to acquire one of the most interesting and important Curta rarities for your collection. Please examine the pictures carefully - I have taken great care to show the device in great detail. The pictures are part of the item description.
This Curta calculator comes from a pet and smoke free home. We do not deliver to P. Boxes, Army Post Office (APO) and Fleet Post Office (FPO) addresses. Most European countries, USA, Australia, Singapore, Japan, UAE, China...
The item "Rare early 1951 Curta Calculator all metal Type I withcan, manuals PERFECT WORKING" is in sale since Saturday, July 31, 2021. This item is in the category "Collectibles\Science & Medicine (1930-Now)\Scientific Instruments\Other Vintage Science Equip". The seller is "curta" and is located in Hamburg.This item can be shipped worldwide.