SOBAX ICC-1600 electronic calculator | 102618622 | Computer History Museum
ROYAL Model 1600 Compatible CAlculator RS-6BR Twin Spool Black & Red Ribbon by Around The Office - Walmart.com
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File:Vintage Litronix 1600 Electronic Pocket Calculator, Made In Malaysia, Red LED Display, Circa 1970s (16116731596).jpg - Wikimedia Commons
OR-1600-C Oreva Calculator
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