Type 1

Type 2

Prinztronic C15, type-1 and type-2.

6 v (4x AA batteries).

Display is 6 digits, red LED, with a small button on the side at the left of the display to display 6 further, less significant, digits.

4-functions, fixed point (0 & 2 places of decimals).

The type-1 has a membrane keyboard (see photograph on the left) whereas the type-2 has a standard button-type keyboard.

80 mm x 172 mm x 22 mm (3.2" x 6.75" x 0.9").

About 1973.

The type-2 was made in Hong Kong.