A photographically cropped full 25-stamp pane of trial color proofs of
a 1963
Algerian stamp depicting an oil derrick (center left). The pane shows
much
different shades of the same colors as the previous proofs. The final printed
stamp (in imperforate form) is shown below for comparison — is comes
close to, but is not identical with, any of the combinations on this sheet.
Note the same production date but changed file number (92091).
© Peter A. Scholle, 2000
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