Untitled multiple-text manuscript

This leporello manuscript written on greyish khòi (or sa?) paper with black ink. It is written in Tham-Lao script (pages 2, 8, 9, 15, 16) and Old Lao script. The texts deal with time reckoning and magic formula. However, two pages (8 and 9) comprise a text which is part of a chronicle of the Lao kingdom of Lan Sang (reign of King Photisalalat, early 16th century). 12 folios. Language: Tham-Lao, Lao Buhan.