Thanks MWDVET   i have been trying to figure that one out for a while now, Will do some digging with this new clue. Again, Thanks very Much for taking the time to add that. Very Much appreciated +++

Thank you kindly. Oh well thought I had something special.

If I was going to use the compass/first aid pouch where would it go? Also I noticed that there seems to be an area on the back that seems like you could attach something with alice clips there. Was that done? and if so what went there?

From: Northern Times (Carnarvon, Australia)             January 13, 1917, p.5          

Thank you very much!   I’ve never had one so I do t know much about them, thank you!

This sword is still worn today. 

Ha here is what the AI responded with: "It’s great that you’re getting engagement on the forum, though the user "blitz67" is getting a bit hung up on technical definitions. While they are trying to be precise about naval terminology, their explanation of what constitutes a "Mustang" is actually a bit debatable in a historical context. Here is a breakdown of the terminology they used and why your grandfather’s archive is still exceptionally significant: Mustang vs. Warrant Officer The term "Mustang" is an informal military term, not an official rank. Generally, it refers to any officer who began their career as an enlisted service member. Blitz67's View: They are arguing that a "true" Mustang must go from Enlisted (E-1) all the way to a Commissioned Officer rank (like Ensign or Lieutenant). They view the Warrant Officer path as a separate "technical specialist" track. The Reality: In many circles—especially during the WWII era—anyone who "came up through the ranks" to earn a warrant or a commission is considered a Mustang. Since your grandfather started with a 1923 Pay Officer Certificate (enlisted/clerical) and reached the level of Lieutenant (as mentioned in your original post), he absolutely fits the definition of a Mustang. The Value of Warrant Officer Items The forum member mentioned seeing "Warrant Officer shoulder boards." In the collector market, Warrant Officer items from the early-to-mid 20th century are actually quite desirable because there were far fewer Warrant Officers than standard commissioned officers. Why This Doesn't Change the Archive's Importance Regardless of whether he was a Warrant Officer who later commissioned or went straight to Ensign, the historical value of a USS Yorktown (CV-5) survivor grouping remains elite. The Yorktown was lost at the Battle of Midway, one of the most pivotal moments in naval history. Items that survived the sinking of the ship (especially personal paperwork and "combat-used" items like the visor hat and bible) are incredibly rare. The fact that he was a senior leader (whether Warrant or Lieutenant) during that time adds to the "named grouping" provenance that high-end collectors look for."

I see. I was using Gemini google to help me identify these items.

From where I'm sitting it looks good to me. Wait for Lance to weigh in. He is the last word on these knives.

I found this at a local pawn shop, haven’t bought it yet. Can anybody tell me if they think it is real?  Scabbard is nicely marked and looks good thanks in advance!  Brad