in case you are interested the YB Block of the Hawaii series 1935A is about the third rarest and commands a premium check a local coin dealer for a price a real nice one commands about 150 or more, but the other PC block note is among the most common. But there is still a lot of collectors would like to have them, try Ebay.
Personally, I really like the 1935A Hawaii and North Africa notes and have several in my collection. I like them because of the circumstances that caused their issuance more so than their rarity or aesthetic beauty. Somewhat off topic but here's one of the North Africa issues:
