Vintage Retro Boots 527 Scientific Calculator with Sleeve - Tested.

Boots 527

Display is 8 digits, LCD.

Scientific functions.

This model with its LCD display is an immediate follow-on from the VFD (Vacuum-Fluorescent Display) as the technology developed.

Apparently also manufactured by Casio for Boots in the late-1970s/early-1980s time period.

Good working condition