ET silver round

I bought this 2 days ago at a random LCD in Alberta, Canada. $45 cad which is approx $33 USD.

All their coins were like $50 CAD, pricey, other than this one ET round, which was old inventory.

Anyone seen this round before?

I don’t usually post but I thought it was a cool buy. I like to visit new LCSs when I travel. Cheers