VINTAGE HALLOWEEN PAPER CARDBOARD MASK BEISTLE?

I sure wish I was camped out in front of the desktop when this listing landed. This is a rare Domino hat mask produced by Beistle from 1926-1931. I can count on one hand the number of times I've seen it for sale. The seller knew just enough to understand it may be Beistle, but nowhere near enough to lazily slap a BIN of $60 on it rather than put it up for auction. SGV is $275, but I think it would have brought more than that given that one hasn't surfaced for quite some time. Beistle made four Domino hat mask designs. I am searching for the one that still eludes me after all these years.