Everything you need to know about Lok'en.

Oh, so you finally read the instructions. See, it wasn't that difficult!
or was it difficult?
There's nothing on the back; these are school medals. They're not needed because they're not even made of valuable materials, and you can't melt them down.

Added 1 minute ago

Why is the guy falling off a waterfall on the first medal?

He's swimming in the water.)
On the second one, he's also swimming, but he's not decorated.

Added 39 seconds ago
From Chelyabinsk.
And I don't need to hear about how a "camera is better" here; I took the photos with my phone.