Pechas are Tibetan texts whose oblong-shaped, loose paper leaves are housed between unattached wooden boards, stiffened paper (or some other firm material), and then wrapped within a cloth and secured with a cord. The format was influenced by the loose-leaf palm manuscripts, or pothi, of ancient India. This manuscript of the Diamond Sūtra, written in Tibetan, appears to have been made in Mongolia. It is a luxurious production, copied out in colored inks likely made from silver, gold, coral, pearl, turquoise, and lapis lazuli in keeping with Mongolian practice.
From the collection of Rare Book School