Vintage 1970s Rockwell Model 20R Electronic Calculator with Box, Case, and Manual

An exceptional piece of early computing history featuring the vintage Rockwell Model 20R handheld electronic calculator, manufactured by Rockwell International’s Microelectronic Product Division. This iconic 1970s device features a cream-colored top housing with retro orange rectangular keys, a chrome perimeter bezel, and a red vacuum fluorescent (VFD) or LED digital display window. The back of the textured brown composite body retains its comprehensive operating guide decal, stamped serial number 126107, and a completely clean 9-volt battery compartment. The vintage calculator is accompanied by a contemporary "Big Display" 8-digit dual-power desktop calculator. Brand / Model: Rockwell Model 20R (Microelectronic Product Division). Era: Mid-1970s (c. 1974–1975). Inclusions: Rockwell 20R calculator, original "The Answer Book" owner's manual, embossed brown faux-leather slip case, battery door cover, and one bonus contemporary desktop calculator. Dimensions: Rockwell unit measures approximately 6" L x 3" W x 1.25" D. Condition Report: Excellent condition; the plastic housings are pristine with zero yellowing, hairline cracks, or corner scuffing. All physical keys are firm with crisp spring-back actions. The internal battery terminal clips are immaculate, shiny, and entirely free of battery acid corrosion or residue. Displays normal light dust accumulation consistent with storage. The owner's manual shows minor edge wear but remains fully bound. Both units are untested for electronic function.