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Additional Pictures 

 

The sales box of an SR-10 Slide Rule calculator sold in April 1973 in the United States.

The sales box of an SR-10 Slide Rule calculator
sold in January 1974 in the United States.

 

The sales box of an SR-10 Slide Rule calculator
sold in July 1975 in the United States.

 


horizontal rule

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© Joerg Woerner, November 18, 2021. No reprints without written permission.