Loetz PG 829 (or "like" PG 829), PPN II-187

When I bought this vase, I thought it was a PG 829. But something about it seemed different to me. The description of PPN II-187 includes, inter alia, the hitherto unknown "blau Phänomen Gre 8042". The combed decor on this vase is beautiful silvery blue, so it occurred to me that this vase could be blue PG 8042. After Warren's post (https://www.collectorsweekly.com/stories/282761-loetz-phnomen-genre-vase-st-pg-830-p?in=442-activity) I'm convinced it's the same PG. I do not know whether the designation PG 831 corresponds to reality, but according to the description of PPN II-831, this could logically be so.
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Corrections based on information from members of the Loetz Advisory Group:
This vase is PG 829 Candia mit dunkelblau.
So I apologize for the confusion.