Silver Thailand "bullet" coins

Hello,

I have 2 Thai Silver "bullet" coins:


#1 - 8 mm / 3,39 g


#2 - 13 mm / 15,48 g

Any help with identification would be appreciated.

Thank you in advance on your replies.

From the weights, the first coin appears to be a ¼ baht and the second coin 1 baht (=1 tical).
These types of coins are somewhat difficult to identify from the marks, but the second coin appears to have a mongkut and possibly a chakra symbol. It seems to me likely that this second coin is from the period of King Mongkut (Rama IV, 1851-1868 AD). It's similar, but not identical, to the coin listed for that period at

http://www.wangdermpalace.org/Pod%20Duang%20Money.html

There's also some general info at
https://coincoin.com/I112.htm

There are also listings for these coins in KM World Coins 1801-1900, but the photos are not very good or comprehensive. Still, I see a couple from Rama IV similar to your second coin.

Sorry I can't help more with the first coin.

Thank you!