When I first started looking for technological and office antiques some 30 years ago they were often considered by most to be just heavy weights, hidden in the corner of antique mall booths or under the table at antique shows.  Jokes abounded about anchors, ropes, dumpsters and such.

Those days are over and the word has spread. There are rare and valuable scientific & office related antiques and there are people who buy and collect them.  In general we deal in, and sell antique & collectible office and scientific related antiques that date from near the turn of the 20th century or earlier. 

Problem is, today everyone wants to sell their 1930's - 1950's era obsolete office stuff for big bucks because of the stories they have heard, or TV shows they have seen.  They just know that their antique typewriter or adding machine is really valuable, no matter the age, rarity, or condition.  The bad news  for potential sellers of this era stuff is that the anchor analogies, rope and heavy weight jokes pertain to many of these later pieces.  1930's or later used typewriters or electric calculators that have been sitting in the garage or in storage the last 40 years or so time has not yet come.  The market may change over time for this readily available and common later stuff but I will not be around to see it, and you probably will not be either.

On the other hand, the supply of good early (pre 1900) scientific related antiques, that was once available and reasonably priced, has now for all intent and purposes disappeared from the scene and the supply has about dried up. It is that era stuff that I am looking for today, and can help you sell. 

If you have a single antique or an entire collection of office and technology related antiques for sale that you think we may be interested in, please contact us at LCM@patented-antiques.com and we will get back to you ASAP.

Please see the FAQ page as well for more general info on this subject.  Thanks!!

Individual titles below that are highlighted in yellow are Select New Additions or Special Gift Ideas.   Be sure to take a look!! Click any of the titles below for the description,  price and a couple pictures Please Note:  Pieces listed in Green do not have a link or pictures, but are offered for sale with a price on this page.

Antique & Vintage Calculators
Sliders & Dials

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• 1st Model Webb Adder w/ Wooden Back
• The Locke Adder
• The "Jeffers Calculator" for Determining Cattle Feed and Nutritional Values and Costs
• A. M. Stephenson Nickeled Adder
• Patented 1873 Stephenson / Simmons Oil City Pa Adder    SOLD
• 2 Different Webb Adders / Calculators
• Unusual Rolling Percentage Calculator
• Under the Counter Pull Out Discount Calculator
• Smallwood Calculator / Adder from Oakland CA
• The Standard Calcumeter 7 Place Mode w/ Reset Dial
• The Standard Calcumeter 7 Place Mode w/o Reset Dial
• The Standard Calcumeter 5 Place Model   SOLD
• The Standard Calcumeter for English Pounds   SOLD
• 3 Different Dial Adders
• Consul the Educated Monkey

Antique & Vintage Calculators
Pinwheel & Drum
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• Type 1 Curta Calculator Made during first year of Production  Serial # 5714   SOLD!!!
• Type 2 Curta Calculator w/ Case & Paperwork
• Curta Type II Calculator w/ Box / Paperwork, & Original Guarantee  SUPER!!
• Curta Type 1 Calculator
• Walther  / Marchant type Calculator
• Marchant Pin Wheel Design Calculator
• "The Rapid" Calculator / Adder in Original Case
• Another one w/o case
• Comptator / Adder / Calculator
• Marchant Electric Calculator
• American Adding Machine
• 2 Different Resulta Adding Machines / Calculators

Antique & Vintage Calculators
Key Type
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• "The Torpedo" German 5 Key Adding Machine
• "The Adder" Patented 10 Key Type Adding Machine    SOLD
• Comptometer Adder /  Calculator
• Sharp Compet #16 Calculator
• Electric Marchant Calculator / Adder
• Base 5 Adder / Calculator
• American Adding Machine
• Toy Adding Machine
• Little Giant Toy Adding Machine

Slide Rules

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• K & E Keuffel & Esser #68-1749 Desk Top Slide Rule w/ Hard Case  (Presentation model)
• Palmers Patent Telegraphic Computing Scales      SOLD
• 2 Different Loga Cylindrical Slide Rules / Calculators
• French Circular Slide Rule
• A. Lietz SF. / German Made Merchants Slide Rule
• Poor's Line of Position Nautical Positioning Calculator
• K & E 4095 Merchants Slide Rule w/ Frameless Cursor
• Richardson c. 1909 Metal Slide Rule
• Stanley / Fuller Spiral Calculator
• Fowler Long Scale Slide Rule in Original Hard Case
• Keuffel & Esser #4012 Thatcher's Patent Calculator / Slide Rule
• Precise Circular Adder /  Calculator
• Gestation & Farming Circular Calculator
• Photography Calculator Pencil
• Calculator Pen

Early Cameras and Related Equipment

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• Nikon S2 Range Finder Camera

Electric Motors & Steam Engines

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Most small or toy vintage electric motors resemble early larger antique steam and electric motors from the same time period or era and are open framed and or bi-polar in design.  Many of the electric motors that came with erector sets or with toy steam engines like Weeden and Bing are similar looking but there are earlier and more elaborate models that were used as demonstrators in classes or labs as well.  Others were sold in Novelty catalogs as working motors for small jobs.   In addition to electric motors there are also hot air models known as "flame lickers", and the steam driven motors / generators meant to be set up with boilers by such makers as Bing, Jensen, Plank and others. 

Names like Edison, Westinghouse, Tesla and a few others come to mind when  considering the introduction of electrical technology into our society.  These inventors and others were the driving force that led America into a new age of power and their early efforts and designs are both important and an interesting facet of our history and a reminder of what it used to be like.

Early Electric Appliances / Motors & Steam Engines

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• Sunbeam So-Ez Electric Sewing Machine Motor w/ Rheostat
• Franklin Sewing Machine Electric Motor
• Toy or Demonstrator Electric Motor
• Small Electro Magnetic Flywheel Motor
• Another Larger Version
•  Miniature Edison Electric Motor       SOLD!
• Ajax Toy  Electric Motor

Antique Electric Heaters

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Early Electric heaters are a collectible category that you can still find examples of and collect as it has not exactly "hot" or the idea has not fully caught on just yet.  With firewood at 300+ / cord, and the Chinese electric heaters sold at Wal-Mart having a life expectancy of 1 year or less, user interest  in these strange devices just might be rekindled.  Some of the earliest and most unusual antique electric heaters are getting more difficult to find and dealers are asking more for them, but in general all the many different designs of resistance heaters go begging and are routinely offered for reasonable prices.  The folks we got these from were way ahead of the curve and saw the potential.  They bought them right, and then stored them away in the barn for 30 or so years.

Light bulbs on the other hand have quite a following I guess due to Edison's name being associated with it.   While some folks were ransacking old houses for the hardware fixtures and larger things, a few people saw the light and were squirreling the old light bulbs away.

Antique Electric Heaters

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• Electric 2 Bulb Heater
• Double Cone Electric Resistance Heater
• Electric Resistance Heater
• Cone Electric Resistance Heater

Vintage Light Bulbs
Early Electric Devices & More

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• 3 Early Light Bulbs and Sockets
• Vintage Colt 4 Way Extension Cord
• Antique Electric Trouble Light
• Antique Battery Powered Electric Quack Machine

Vintage Radios

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• Atwater Kent 5 Tube Radio
• Dayton Fan & Motor Co Day Fan Tube Radio
• Stewart Warner #300 Tube Radio
• Rely-O-Dyne Tube Radio
• 3 Crosley Tube Radios