Amazon.com: CASIO SCHULRECHNER Modell FX 5800 P, BATTERIEBETRIEB, Black : Casio: Office Products
File:Vintage Casio Electronic Pocket Calculator, Model AL-8S, Made In Japan, 8 Digit Fluorescent Display, Circa 1977 (14212804553).jpg - Wikimedia Commons
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Vintage Casio AL-8S Date Electronic Calculator Tested & Works | eBay