Skip to main content

This auction has ended. View lot details

You may also be interested in

Own a similar item?

Submit your item online for a free auction estimate.

Lot 636W

OHIO SCIENTIFIC Challenger 8P.

5 December 2018, 14:00 EST
New York

US$2,000 - US$3,000

Own a similar item?

Submit your item online for a free auction estimate.

How to sell

Looking for a similar item?

Our History of Science & Technology specialists can help you find a similar item at an auction or via a private sale.

Find your local specialist

Ask about this lot

OHIO SCIENTIFIC Challenger 8P.

8-bit microcomputer, Model C8PDF, Serial #14920; metal case with removable top, includes original matching keyboard, 6 ports and 2 coaxial connectors in back, power supply and fan, 250 x 434 x 385 mm. Contains 6 Main modules: OSI 520 x3; OSI 470 Rev B; OSI 505 REV B 1979; and another with identification not accessible.

Ohio Scientific Inc. was formed by Mike and Charity Cheiky in 1975 and was based in Hiram, Ohio. Their earliest products were microcomputers based around the MOS 6502 microprocessor, the same used in the Apple-1, Commodore PET & VIC 20, etc. The company introduced the model 500 CPU card design in 1978 and was primarily used in the Challenger systems. The 8P, introduced in 1979 was the most expandable of that series and used a 6502A microprocessor.

Additional information

Bid now on these items

Signed to Spencer Tracy 1952 Hemingway, Ernest. 1899-1961. The Old Man and the Sea, New York: Charles Scribner's Sons, 1952.

A Presentation Copy of Kennedy's First Book to Spencer Tracy. Kennedy, John F. 1917-1963. Why England Slept. New York: Wilfred Funk, Inc., 1940.

ADVERTISING POSTERfor 'The Suffragette' newspaper, [c.1913-1914]

ILLUMINATED ADDRESS – CLARA CODD Illuminated printed address signed by Emmeline Pankhurst, [1909]

MUSIC & RECORDINGS – ETHEL SMYTH Collection of printed music, song sheets and records, [c.1911-1912]