$ Antiques $
$ Wanted $
*Antique Surveying
Instruments*
Transits
Levels
Compasses
Accessories
*Antique Tools*
Woodworking Planes
Misc Tools
Leatherworking
Tools
Farm
Anvils
Mining
Traps
*Antique Sewing
Machines*
Early & Patented
Singer Featherweights
Toys
Sewing Birds
*US Patent Models*
Cast Iron Stoves *Americana*
*Salesman Samples*
Salesman Samples
Patent Models
Washers
Figural Cast Iron
*Office Antiques*
Scientific Antiques
Occupational Photos
Coffee Grinders
Corkscrews
Pressing Irons
Ice Cream Scoops
Sports & Golf
Kitchen
Toasters
Calculation
Slide Rules
Typewriters
Telephones
Toys & Steam
Fans & Electric
Pencil Sharpeners
Antique Calculation
Sales Archive
Curta Type 1 Calculator The Curta was the top of the line calculator before the introduction of the handheld electronic calculator in the early 70's. These devices were first invented by Carl Herzstark while he was imprisoned in a German concentration camp during World War II. On the bottom of the calculator is the manufacturer info, and it says Made in Liechtenstein, (Customs Union with Switzerland.) by Contina LTD. Mauren System Curt Herzstark.
This calculator has it original cardboard box marked Liechtenstein. The serial # is 42738. The case for this one is metal and does show some wear, mostly just a loss of the blackness at the highpoints. The calculator itself is very nice. There is no paperwork with this one, but reprints are available. These were the calculator of choice just before the introduction of the electronic handhelds came onto the market and mark the end of an era! Highly collectible and all original. SOLD!!
The Locke Adder This unusual sliding bar adder was patented in Kensett, Iowa in 1904. This is kind of late in the scheme of things as far as the design of calculators and adders was progressing, and probably helps explain its relative scarcity as it probably was not very popular and seemed dated to potential buyers it was offered to. This example is in Good- condition with some paint loss to the body. The slides all function as they should. An interesting piece that clearly demonstrates just how far we have come. SOLD!!
The Universal Adder Patented July 15th 1890 This unusual sliding bar adder according to the info on the front case was patented in England France Germany and Canada as well as the US on the date found on the left side of the case. It was a well done and interesting design, with a window in the back of the unit to view the current result. The body is made of some sort o early plastic / gutta perch a type material, and it has warped somewhat over the years, making sliding some of the scales a bit difficult to achieve. Overall the condition is very nice otherwise. There is also remains of a label and instructions on the back side as can be seen in the second picture. SOLD!!
Special Note: We have more slide rules, calculators, scientific instruments and other related antiques for sale on our sister site www.patented-antiques.com. Please take a look if interested.
Note: To see more sales results we have had over the years visit the Past Sales Archives on our sister site www.Patented-Antiques.com
