Sharp - Calculator - 1980-1990 - EL-428 Abacus Calculator

The SHARP EL-428 abacus calculator is a distinctive office accessory from the 1980s and 90s, and a rare model among vintage calculator collectors.

This device combines a calculator and abacus in one design. The calculator section features a display screen, and the buttons function normally. The abacus beads run smoothly and are fully functional. The calculator display has a slight imperfection, but it does not affect usability. The blue casing is in excellent condition, making it a vintage office accessory that combines practicality and collectability.