Alchemical Writings (Stone of Philosophers)

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The page exhibits "foxing," which refers to the small, reddish-brown spots visible on the paper. This is a common form of age-related spotting caused by the oxidation of iron impurities or the growth of fungi in the paper fibers. There is also a faint, illegible pencil inscription in the bottom right corner, likely a modern shelfmark or a dealer’s price code that has become obscured over time.