Step back into the 1970s with this Rockwell 21R Electronic Calculator. Complete with its original vinyl case, charger, and owner's manual, it offers a rare glimpse into early personal computing. While it shows battery corrosion and remains untested, it is a beautiful candidate for restoration or display. Perfect for a vintage electronics collection, retro office setup, or as a unique gift. Brand: Rockwell Model: 21R Type: Electronic Calculator Era: 1970s Country: Mexico Included: Calculator, Case, Charger, Manual Power: AC/DC Converter Display: Red LED Features: Memory/Percent Case: Vinyl Serial: 146284 Condition: Untested/Corrosion Keywords: Retro, MCM, STEM, Engineering, Computing History, Tech Decor, Restoration, Collectible, 70s, Office, Science, Math