Tibet Coins

Hello guys, I would like to ask your help to ID this 2 coins, about Year and KM... Thanks in advance!

I found these in Krause. The top one is a copper Sho, Y-21B, from 1923 (dated BE cycle 15 year 52, only made for one year).
The lower one is also a copper Sho, Y-21.1, made from BE 15-52 to 16-2 (1918 to 1928). I'm not able to spot a date on the second one, perhaps someone more skilled in dating Tibetan coins can, or perhaps you can see more clearly with the coin in hand.

This website is helpful for readingTibetan coin dates

http://creounity.com/apps/time_machine/index.php?go=tibet.php&lang=en

Both looks to have the exact same legends, only in different styles...Really difficult...

Hello,
The margin legend of the reverse side of both coins is "༨༠ ཉ ༡༥ ལོ༩ "
Cycle 15, year 59.

https://en.numista.com/catalogue/pieces22194.html

For the first one, we can see dots on both sides. Y#21.2 ?
For the second one, we have dots only on the observe. Y#21.1a on Numista.

Цитата: "Cycnos"​Hello,
​The margin legend of the reverse side of both coins is "༨༠ ཉ ༡༥ ལོ༩ "
​Cycle 15, year 59.
​
​https://en.numista.com/catalogue/pieces22194.html
​
​For the first one, we can see dots on both sides. Y#21.2 ?
​For the second one, we have dots only on the observe. Y#21.1a on Numista.

​Thanks a lot Cycnos, it was very helpful. The second one has a weak strike (I think it is) and is hard to see, but I cant see dots on the arabesques like on the first one...