What are these draupnirs?

[Marm (Victorian YoYos)]

I’ve never seen these engravings outside of these pictures

[codinghorror]

You sure they aren’t stickers? I’ve seen stickers used this way before.

https://forums.yoyoexpert.com/t/draupnir-killers/81320/38

[Marm (Victorian YoYos)]

I’ve never seen even the this before, very interesting. Thanks mate

[feryuweryu]

Oooh, you just made me want to make custom stickers for my yoyos.