Montgomery Ward P90 Handheld Electronic Calculator (Model Number DAN-8670A)

This handheld electronic calculator has a light tan plastic case and a gray plastic keyboard. It has an array of eighteen rectangular keys with rounded corners. These include ten digit keys and a decimal point key, keys for the four arithmetic functions, an equals/constant key, a percentage key, and a clear entry/clear key. The eight-digit LED display is behind the keyboard. The battery compartment opens from the back at the top. The device has two plastic feet. The socket for the adapter is on the right.
A mark on the front reads: MONTGOMERY (/) WARD ELECTRONIC P90. The paper tag on the back reads: WARDS P-90. It also reads: MODEL NO. DAN-8670A (/) SERIAL NO. 57X-003112 (/) Distributed By (/) Montgomery Ward & Co., Inc. (/) Chicago, Illinois 60671 (/) MADE IN JAPAN.
Compare 1986.0988.169, an APF Mark 40. The Ward P90 was made for Montgomery Ward by APF Electronics.
Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett, 1997, p. 102.
Online Datamath Calculator Museum, accessed August 29, 2014.
Currently not on view
Object Name
electronic calculator
date made
ca 1975
Montgomery Ward
APF Electronics
Physical Description
metal (circuitry material)
paper (sticker material)
plastic (case; keys; display cover material)
overall: 1 1/4 in x 2 1/2 in x 4 1/2 in; 3.175 cm x 6.35 cm x 11.43 cm
place made
ID Number
catalog number
accession number
Computers & Business Machines
Handheld Electronic Calculators
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of John B. Priser
Additional Media

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