three vintage electronic calculators, from left to right: a Sinclair Cambridge, a Commodore 776M, and a Texas Instruments TI-35.

Sinclair & Commodore are none functional, the texts is functional but keys are stiff with age and will need sorting.

Very retro and the first 2 are quite rare even none functional ones.

The Sinclair Cambridge is a basic four-function calculator introduced in 1973.
The Commodore 776M (center) is a collectible 1975 calculator with a red LED display, 7-digit precision, and algebraic logic.

The Texas Instruments TI-35 is a scientific calculator known for its "Constant Memory" feature.