The helmet I purchased is indeed hand slushed urethane. And THICK. Meaning SEVERAL layers. Making it unwearable. Based on what you have to say about it, the only logical conclusion is that mine IS the one that Paul remolded that spawned the 12 clean castings. So thank you for confirming that!
Sounds like you are right on the money, then. That is certainly a cool piece of the PP2 lineage to own.