![My parents bought this pocket calculator in 1977 and are still using it. Casio Personal M1. : r/BuyItForLife My parents bought this pocket calculator in 1977 and are still using it. Casio Personal M1. : r/BuyItForLife](https://external-preview.redd.it/NvG4HIu_bEH5DgbX1lGQCgbvfZjMlPbjr3eI1w-E4j4.jpg?auto=webp&s=3811b77da08ad89f7db3af3a0a8af05b2d553827)
My parents bought this pocket calculator in 1977 and are still using it. Casio Personal M1. : r/BuyItForLife
![Casio - Personal M-1 H-813 - - Vintage calculator - Casio Personal M1 H813 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA Casio - Personal M-1 H-813 - - Vintage calculator - Casio Personal M1 H813 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA](https://casio.ledudu.com/images/calculs/casio/machines/PersonalM1H813.jpg)
Casio - Personal M-1 H-813 - - Vintage calculator - Casio Personal M1 H813 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
![My parents bought this pocket calculator in 1977 and are still using it. Casio Personal M1. : r/BuyItForLife My parents bought this pocket calculator in 1977 and are still using it. Casio Personal M1. : r/BuyItForLife](http://i.imgur.com/4uOvPKCh.jpg)
My parents bought this pocket calculator in 1977 and are still using it. Casio Personal M1. : r/BuyItForLife
![Casio - Personal M-1 H-813B - - Vintage calculator - Casio Personal M1 H813B - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA Casio - Personal M-1 H-813B - - Vintage calculator - Casio Personal M1 H813B - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA](https://casio.ledudu.com/images/calculs/casio/machines/zoom/personalM1H813B.jpg)
Casio - Personal M-1 H-813B - - Vintage calculator - Casio Personal M1 H813B - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
![RESERVED for Ross, Vintage 1970s Calculators, Casio, Sanyo, Toshiba, Olympia, Nasco, Calculators Scientific Vintage, Electronic Caculators. | Vintage, Pocket calculators, Sanyo RESERVED for Ross, Vintage 1970s Calculators, Casio, Sanyo, Toshiba, Olympia, Nasco, Calculators Scientific Vintage, Electronic Caculators. | Vintage, Pocket calculators, Sanyo](https://i.pinimg.com/736x/c6/96/f5/c696f5e726dd23d0cf8879e1f1ecf536.jpg)