Here is one I just picked up. Marked a "Beaver 100" and pretty much identical to a "One Hundred". Custom made for Ray Kealer, possibly Mayor Ray Kealer of Long Beach, Ca from 1957 - 60, since it came out of California. The case is white inside instead of red. The leather of the case is a darker brown and more natural finish that the other case I have. Same plastic inserts to hold the hat. Unfortunately this hat has had some moth damage and will either need some felt transplants or a 2" ribbon.
I couldn't find any past references to a Beaver 100. Anyone seen one before? Also haven't seen the white interior case.