An Additional Note on Nai Mot’s Printing of the Three Seals Laws in 1849/50

This research note presents additional information on Nai Mot Amatayakul’s 1849/50 first printed edition of the Three Seals Laws: the law texts assembled by King Rama I and the kingdom’s earliest banned book. The volume sent to Paris was probably a proof copy amended before the main print run. The volume in the National Library of Thailand, once believed to be the sole surviving copy, has, as of 2026, gone missing. Nai Mot claimed to have sold or distributed up to 200 copies, so perhaps additional copies may yet survive.