SodaBottleBob wrote:
> Based on your best estimation at this juncture, what would you say the percentages are of the pin definitely being American?
> 100% Sure ~ 75% ~ 50% ~ etc.
> It's driving me crazy that I can't find a single U.S. pin like the one in question with T-handled broadswords.
The broadswords on the pin are not merely T-handled. Notice the large raised oval at the center of the swords' crossguard. The oval shape there what is called a "clamshell guard." (Google the term to learn more.) Several people in this discussion have suggested the swords are Artillery short-swords ...but absolutely no artillery short-swords have a clamshell guard.
There are a few American swords which have a clamshell guard ...most notably, the US Army Model-1840 NCO (Non-Commissioned Officer) sword. It does have a straight blade, but it's a very narrow blade ...totally unlike a broadsword (whose blade is quite wide, as the name indicates).
So, because the swords on the pin are broadswords with a clamshell guard, a form of sword that was popular in Europe but not in America, my answer to your question is that the pin is definitely not US Army Regular Issue ...and definitely not Confederate ...but there's a small possibility (less than 25%) that it was for a post-civil-war State Militia unit (such as, a New York National Guard unit). But, due to the broadswords with clamshell guard on the crossguard, I have to assume is "most probably" European.
By the way... some Nazi daggers have a small-ish clamshell guard on their crossguard.
To help the forum's readers recognize the clamshell guard on the pin broadswords' crossguard, here's the pin photo and two photos showing swords with a clamshell guard on the side of the crossguard. (I found some photos showing the clamshell guard on a US Army M-1840 NCO sword, but those photos are copy-protected, so you'll have to do a google-search to see them.)