Up for sale is a fantastic lot of two iconic pieces of microcomputing history from the golden era of Japanese electronics. Perfect for vintage tech collectors, display enthusiasts, or repair hobbyists.

1. Casio SL-900 Slim Line Solar Calculator (Very Good Condition - Complete)

An early 1980s marvel of engineering. This is one of the earliest credit-card-sized calculators powered entirely by light, requiring no backup batteries.

• Condition: Very Good cosmetic and working condition. The display is crisp, and the solar cell is highly responsive.

• Completeness: Includes the original vinyl wallet protective case and the original printed manual/instruction booklet (Printed in Japan, code 084D SH).

• Key Features: * Dual-panel look with a high-power solar array sitting flush next to the LCD digital readout.

  • Ultra-thin, flat form factor designed to slide easily into a wallet or breast pocket.

  • Full mathematical functions including memory keys (MR, M-, M+), percentage (%), and square root (√).

  • Proudly stamped Made in Japan.

2. Sharp EL-8145 "Storage Computer" (For Parts or Repair)

A highly collectible late-1970s ultra-thin calculator featuring unique melody/tone functions and memory storage options.

• Condition: FOR PARTS OR REPAIR. The unit is currently non-working due to silver oxide battery leakage in the compartment, which has caused some green corrosion on the terminal contacts (see macro photos).

• Notes for Fixers: The back plate has been removed for inspection and is missing its original fastening screw. Inside, the circuit board and the proprietary Sharp LI3030 chip remain intact. This is an excellent restoration candidate or an invaluable source of rare internal components.

• Key Features: Unique sensor-touch keyboard matrix, musical note function, and dedicated STR/COMP storage computer interface. Stamped Made in Japan (Serial No. 87108027).

What’s Included in This Lot

• 1x Casio SL-900 Solar Calculator

• 1x Original Casio SL-900 Tri-Fold Manual

• 1x Original Casio Black Protective Slip Case

• 1x Sharp EL-8145 Calculator (Disassembled/Missing screw, for parts)

• 1x Original Sharp Black Protective Wallet Case

Shipping & Handling

Seller Note: These items will be meticulously packed with anti-static bubble wrap and shipped in a sturdy box to ensure they arrive safely in their described condition. Please inspect all high-resolution photos closely as they form part of the cosmetic description.