Spots on Abdelkuri

I recently snagged this beautiful abdelkuri and was curious if I may get some insights on what these spots may be?

I have a large collection of euphorbia and cacti and I’m more than familiar in dealing with many types of fungus, but these just seem different. They are rock hard and don’t seem to be growing in size, but I haven’t had it long enough to tell if more are appearing. Possible scaring from past offshoots or edema damage, or am I just lying to myself?

Any advice would be appreciated:)