The Typewriter Database

To find out when your typewriter was made, start by choosing the brand from the select box below.

Select Brand:

Green Serial #'s • Black notes, no #'s • Grey no info.


From the Virtual Typewriter Collection of Guillermo Fernandez Boan:
1933 International Type 31

Typeface Specimen:

qr code

1933 International Type 31
Serial #

Status: My Collection
Created: 06-18-2017 at 09:35AM
Last Edit: 06-18-2017 at 09:37AM

International Serial Numbers
International Typewriter Galleries
International Type 31 Typewriter Galleries


According to the IBM Archives, "Alphabetical duplicating keypunches recorded alphabetic Iin tabulating cards so that complete words and names, together with numerical data, could be later printed by an alphabetical accounting machine.
The Type 31 Alphabetical Duplicating Punch was introduced by IBM in 1933, and it automatically ejected one card and fed another in 0.65 second. These machines were equipped with separate alphabetical and numerical keyboards.
The alphabetical keyboard was similar to a conventional manual typewriter except that the shift, tab, backspace and character keys were eliminated, and a skip, release, stacker and '1' key were provided."
According Greg Fudacz (from whom I get this one) "This machine was built by IBM on the frame of an Underwood F-Model portable typewriter".

 2 Hunters Like this gallery.

Guillermo Fernandez Boan

Argentinian lawyer resident in Buenos Aires city.
For half a century, enthusiast typist. Now enthusiast typewriter hunter.

1933 International Type 31 Photo Gallery

Click a thumbnail to view slideshow