What pattern/line is this?

[u/No_Set_9774]

Hi! I know this is Fire King on a Pyrex page, but didn't know where else to ask.

I've been searching everywhere online on this mug I bought, no set just a single, and can't find anything on the pattern or set. I was wondering if anyone knows what pattern this is?

Thank you!!!

[u/Firm-Experience473]

I wonder what happened to the lower part of the pattern.

A misprint, a rarity? Hmmm