Sharp Elsi Mate EL-330 (case slightly split at bottom) and EL-231H old calculators. I have not tried to clean these, photographs show their condition. Also including Sharp EL-326L ( the back has come loose on this and is dented, parts?), and EL-231C ( parts).
The Sharp ElsiMate EL-330 , Sharp El-231H, and Sharp El-326L calculators would be an excellent fit for demanding professionals requiring advanced mathematical and statistical capabilities in their portable electronic devices.