Like "Lifter" said, a very underrated knife. I bought one for about $50 that is not mint, probably 90%, with the original owners name inscribed on the sheath in pen. I also found another one in the mountains of Utah while hunting deer a bunch of years back.
I've read the conjecture that the "Q" in the 225Q designation pointed to the Quartermaster (supply) function but have read other writers who question that use. Seems Cattaragus always called this knife their "Commando" knife (according to another author). My knife has no dings or marks in the butt to indicate anyone pounded any nails with it (reclosing wooden crates). There may be truth in both concepts. I just know that if I had been a soldier during WWII (rather than one from 1976-1999) I would rather have carried a 225Q than an M3 Trench Knife.
Bruce Woodbury
PS: Since I am a retired US Army Quartermaster Officer, I have been through the Quartermaster Museum at Fort Lee, Virginia, many times. I don't recall any displays or mention of the 225Q knife there.