Assam, 1/ Rupee, which KM? [opgelost]

Hi,
I have problems to decide which is the difference between KM 178, 179 and 180.
Here is my coin which I cannot classify.
Any help would be appreciated

Its KM#178

Thank you,
but can you highlight the differences between these coins?

On KM#178 the legend on the obverse, "Sri Sri Lakshmi Simha Narendrasaya", is written as,
Sri Sri La
kshmi Simha
Narendrasaya
https://en.numista.com/catalogue/pieces50773.html

On KM#179 the same legend on the obverse is written as,
Sri Sri La
kshmi Simha Na
rendrasaya
https://www.ngccoin.com/price-guide/world/india-independent-kingdoms-assam-12-rupee-km-179-1769-80-cuid-88103-duid-239637

On KM#180 there is the letter "1" (for regnal year 1) in Assamese at the bottom of the reverse
https://en.numista.com/catalogue/pieces83130.html

Thanks a lot for these prescious information.
I have been searching for the one mentionend in the Krause without success.
With your clue I finally managed to find it.