[mcphage]

I mean, looking at stuff like this: https://upload.wikimedia.org/wikipedia/commons/d/d8/Apis_Sar...

There's not much writing there, but I wouldn't call that crude.

[ncmncm]

Relative to the tech needed to produce the boxes, that is extremely crude. But your pic is far from the most crude seen.

That there is no uniformity is more evidence that they were tagged.