Electric Eye Stamps on Thin Paper
C. Butzen of Detroit, Mich.,
has shown me a block of four of a stamp from this printing on a paper
considerably thinner than that in regular use and thinner than other
sheets from the Electric
Eye printings. The paper has a greater transparency and there
possibility that the Bureau, when conducting experiments with
also experimented some with paper.
As a general rule, stamp paper at the Bureau is held to a very rigid standard and lapses such as the above are rather unusual.
- George B. Sloane
May 25, 1935
Posted July 26, 1999
Editor's note: Scott recognized this by the following note after 634: "No. 634, Type I, exists on a thin, tough experimental paper."
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