Need help to identify Sikh Empire Coin

[riasatbd]

Dear Members,
I do have this coin from Sikh empire and I am assuming it is from Ranjit Singh. But please let me know if I'm right and what year this coin is from and any other details.

Size: Given in Picture
Weight: .4 oz

[krishna]

Obverse seems ranjit singh rupee vs (vikram samvat) 1884, reverse date image is inverted and not clear