Between 1450 and 1455, the Gutenberg Bible was completed. Early documentation states that a total of 200 copies were scheduled to be printed on rag cotton linen paper, and 30 copies on velum animal skin. It is not known exactly how many copies were actually printed. Today, only 22 copies are known to exist, of which 7 are on velum.
If an entire Gutenberg Bible should become available on the world market, it would likely fetch an estimated 100 million dollars! Even an individual leaf (a single two-sided page) from the original Gutenberg Bible can fetch around $100,000. Gutenberg’s work is the most rare and valuable printed material in the world.