Curta Type II Calculator This Type II Curta Calculator is in excellent condition and operates smoothly and flawlessly.
The serial # on this Type II Curta is 529370. The body is very nice and shows minimal wear or tear. The
metal case is nice noting the top bumper was missing and has been replaced
with some appropriate foam. Also included are the 2 pieces of original paperwork not shown.The Curta calculator was invented by Carl Herzstark during World War II while imprisoned in a German concentration camp. This interesting design calculator was the top of the line manual calculator in its day and was immensely popular before the advent of the handheld electronic calculator which essentially made them obsolete in the 70's and collectible shortly afterward.
In todays world they are sometimes used in road rallies and some other applications but are worth more as collectibles and examples of calculation history. They were made up until about 1970 and all told about 150,00 both Type 1 & Type 2 models were produced They are highly collectible pieces of calculation history, and an important example of calculation technology in the scheme of things.
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AMN-CURTA-370
Fine . . . . . $1450.00
To Order Email: patentedantiques@gmail.com
Curta
Serial # 79405 Type I Calculator This Type I Curta Calculator is in excellent condition and operates smoothly and flawlessly.
It shows no signs of use. It is as close to minty nice as one could ask for. The previous owner bought it new
in the 1970s, and then found one of those new electronic
hand helds before he put this into service. It has sat in a drawer, in
its original box, for the last 50 some years. The serial # on this Type
I Curta is 79405. The body is very nice and shows no wear or tear. The
plastic case is flawless w/ both pads. No scuffs or scratches. Also included
is original paperwork, guarantee, and outer box shown.The Curta calculator was invented by Carl Herzstark during World War II while imprisoned in a German concentration camp. This interesting design calculator was the top of the line manual calculator in its day and was immensely popular before the advent of the handheld electronic calculator which essentially made them obsolete in the 70's and collectible shortly afterward.
In todays world they are sometimes used in road rallies and some other applications but are worth more as collectibles and examples of calculation history. They were made up until about 1970 and all told about 150,00 both Type 1 & Type 2 models were produced They are highly collectible pieces of calculation history, and an important example of calculation technology in the scheme of things.
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AMN-CURTA-405
Fine . . . . . $1950.00
To Order Email: patentedantiques@gmail.com
Monroe L160-X Calculator
/ Adding Machine
Monroe Calculators / Adding Machines are one of the best known and widely available drum style calculators
available. The design went through many modifications over its
lifetime. This one dates from the 50s or so, and is the miniaturized
executive model. This example saw little use and in still housed in it original carry case.
One of the best sites to read about and see all the different models is John Wolfs site, http://www.johnwolff.id.au/calculators/Monroe/Monroe.htm.
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AMN-MONROE
Fine . . . . . $125.00 SOLD!!
To Order Email: patentedantiques@gmail.com
Original
Odhner Model 30 Pin Wheel Calculator
Original Odhner Calculators went through many modifications over its lifetime. The
basic design idea was first introduced in the 1870s. The design and name
changed several times over the years. One of the best sites to read about and see
many different models is John Wolfs site,
http://www.johnwolff.id.au/calculators/Odhner/Odhner.htm
He does not list a Model 30 but has a No. 29 he dates from 1938, and this
Model 30 seems to be a very close match. The cosmetic condition is
very nice. A look back into the past.
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AMN-ODHNER
Fine . . . . . $195.00
To Order Email: patentedantiques@gmail.com
Keuffel & Esser 4012 / 4013
Thacher Calculator / Circular Slide Rule C. 1914 Original Instruction Booklet
/ Manual
These are almost always missing as they do not fit well in the box Thatcher
calculators came in and so oftentimes got separated. Minor stains and some
looseness to the binding, but overall very nice. Click for Pic Click for Pic Click for Pic
AMN-KE4012-MAN
Good + . . . . . $150.00 SOLD!!
To Order Email: patentedantiques@gmail.com
Electric Motors / Dynamos / Fans / Steam Engines / Water
Motors
& Other Early Power Devices
Thomas Edison's
Edison System Ampere Meter This Edison System ampere meter is a rare
and important piece of Electrical history. The condition of this large and
unusual Edison amp meter is exceptional. The scale
reads up to 264 amps, off the scale, indicating this meter must have been
used with a
huge dynamo or motor.This Edison meter measures approx. 10" across and 16" tall. The back of the case is cast iron. The etched glass face is flawless. The previous owner made a copy of the paper scale to cover the original scale to help preserve it. The original paper scale is behind the copy on the face in the pics. It is in nice condition.
The wooden case is original finish and in fine condition. The interior workings look like new. The wooden case is stamped in two places with Elec. Eng. Dept. L.S.J.U. which is Stanford University in Palo Alto CA.
A super nice and rare piece of American Electrical History that will display well and be a great addition to the old office, electrical, scientific or related collection! Nice!!
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AMN-ED-METER
Fine . . . . . $4750.00
To Order Email: patentedantiques@gmail.com