Alessi STS 01 Dauphine calculator Designer (Person) Sowden, George Manufacturer Alessi Date 1997 (circa)
Letter Opener SS-20 calculator Designer (Person) Unknown Manufacturer Unknown Date 1980 - 1989 (circa)
Casio Electronic Printing Calculator HR-100 Designer (Person) Unknown Manufacturer Casio Date 1980 - 1989 (circa)
Prinztronic X15 calculator Designer (Person) Unknown Manufacturer Prinztronic Date 1970 - 1979 (circa)