Casio CFX 9850GB Plus Color Power Graphing Calculator - 32KB - *TESTED WORKS* 79767158200 | eBay
TOSEC: Casio CFX-9850 (2012-04-23) : Free Download, Borrow, and Streaming : Internet Archive
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Casio CFX 9850GB Plus Graphing Calculator 79767158200 | eBay
Casio CFX-9850G Handheld Electronic Calculator | National Museum of American History
Casio CFX-9850GC Plus Advanced Color Graphing Calculator (Used)