Not a coin.
Acronym Finder has 60 definitions for EMI (with another 237 in the “attic”). Many of those are organizations that could have issued a token.
Searching on Token Catalog produces 4036 hits over 162 pages, but it finds hits withing words in lettering so a token with PREMIUM in the lettering is a match, and it also matches in side location names (e.g., Chemin du Coteau, Terrebonne, Quebec, Canada). I tried searching Token Catalog for EMI though Google but no matches were found.
I did find this listing: https://www.tokopedia.com/valeriocollectio/koin-token-107-emi
Possibly from the same organization, but I didn't find any any clues in the text of that page.
This is probably also a dead-end: https://www.facebook.com/emithcom/
