What a beautiful medal. Thank you for sharing it. 

Some 1917 dated leggings i just got off ebay, ive never seen any with the extra hooks. Asking for measurements, they said they are 15.5 inches tall, other measurements correspond to a size 1 

I would say that AA stands for anti-aircraft artillery. I can't add much beyond that other than to observe that it would make sense for the state of NY to have anti-aircraft installations.

Information/story about the medal can be found here: https://www.usni.org/magazines/naval-history/2025/august/pieces-past   Photos of the medal in detail below :)

I recently acquired this M1917A1 helmet. It started life as a British MkI helmet that was supplied to the AEF. It was manufactured by Thomas Firth and Sons. The chinstrap is marked H.M. 103 CAC (AA) S. (I think, it's hard to read) I believe this is a Coast Artillery Corps unit, but I can't find a unit with this designation. Painted boldly on the front is a large N.Y. The helmet came from an Antique Seller on Long Island, NY. I know there were multiple CAC units stationed there before and during WWII. I was wondering if anyone has any information on this particular unit? If anyone could help me out, that would be greatly appreciated.

The gauntlets are the 1886 pattern and are quartermaster marked.  Soldier’s name are in the gloves.  I will post pictures. Robert  

Incredible ID'd piece of history! Quality photos as well!  

Very cool. I plan to make a lamp out of an artillery shell and an M1 helmet (both from WW2). 

Love these New Service revolvers.  I have a M1909 and a M1917, and shoot them once every couple of years with light loads.

I think you go on better vacations than I do, I end up at beaches and resorts and mountains, and none of them have surplus stores or flea markets.  You got some nice examples of the fuels ration booklets, my kind of stuff.  Cheers Armygas