Let me start with the disclaimer to NEVER do share an image of a key for a lock that matters. Anyone with minimal skill can copy this key now. I'm just posting about a lock that I use only for #locksport to share with the #pickstr crowd.
OK so, I have this abus 55/40 that keeps causing me trouble despite only being an orange belt lock. Dug out the key to see what was up and here is what I found on my randomly purchased lock.
https://blossom.primal.net/f5aec09b5635a4dc2ea514c40883e0c156d68621558f472ee35e3e2e3ea3fe67.jpg