Set of three Casio Calculators N-1 N-2 N-3 from the 80’s (8 digits, 10 digits, 12 digits).

All three have square function and memory, n-2 and n-3 have Grand Total feature.

The N-1 has a mark near the 0 (watch photo).

The n-1 has a manual in Japanese and you can find online a copy of the manual on French.

The n-2 has multi lengual manual (en, de, fr, sp, it).

LR-44 batteries not included