On a side note, I’m hoping they are vacor and we can prove it . The black, yellow and orange ones do fool a lot of people and there is a definite type that has higher quality glass that rivals cac when put next to each other. Like someone said before, the early michaelangelos are sweet. IMHO, if it could be proven, there might be an early run of each type that is just stellar and highly collectible. This is way better than the vague “German circus” that is probably hearsay