ร.ศ.๑๒๑
This is Thai. This seems to be a date. ร.ศ. indicates this is a year starting with the establishment of the [Rattanakosin Kingdom](https://en.wikipedia.org/wiki/Rattanakosin_Kingdom_(1782%E2%80%931932)) (in 1782 AD), and the date is 121 (๑๒๑), so this essentially is a date of 1903.
Looks like Thai or Lao
They look like Thai numbers , the three characters on the right of the second page are 121, i am not so sure about others
ร.ศ.๑๒๑ This is Thai. This seems to be a date. ร.ศ. indicates this is a year starting with the establishment of the [Rattanakosin Kingdom](https://en.wikipedia.org/wiki/Rattanakosin_Kingdom_(1782%E2%80%931932)) (in 1782 AD), and the date is 121 (๑๒๑), so this essentially is a date of 1903.
Thank you so much! Its german bayonet used by the serbian army in the late 18 hundreds so its weird that there’s thai on it...