It just happened that I currently have 100 type specimens scanned at 200dpi, which is a perfect number for an analysis of typewriter typefaces. These have all been taken from typewriters either in my collection, formerly in my collection, or other opportunities I have taken.
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elite and smaller typefaces
pica and larger typefaces
The typefaces you see do not represent the complete range of sizes that were available. I only have 14cpi to 6cpi typefaces, but 21cpi, 17cpi, and 5cpi typewriters were produced, as well as 9cpi and 8cpi typefaces which I have none of.
German typewriters tend to have the largest type, Italian typewriters also have large type, American typewriters have smaller type, but the smallest is found on Hermes typewriters. Japanese typewriters are not represented well enough here to make a conclusion for them.
I have solved the grey cast problem—I am now saving my typecasts as 256 color png files.
Sent from 100 typewriters.