Mark WP #27 'Dai in a Box' is a mark that's quite hard to find. They're even harder to find on large floats. I'm only aware of less than a handful of 'Dai in a Box' marks stamped on the ID seals of large floats.
This rare float measures 30 inches in circumference or about 9 1/2 inches in diameter.
It has excellent provenance and was found in the Philippines by Barry Diaz. I purchased it from Barry in 2022.