hello BigBiloxi ,
very nice two piece tongue buckle , is it a sturdy solid casting or rather on the thin delicate type ??
i have not seen that design before but i have seen a few that arn't to far off .
i do know the early state of Florid militia's had a lone palm tree for their design but i do not know when they adopted it for uniform acroutments. two piece buckles came to being a few years after the War of 1812 ended but your style (interlocking tongue types) were more prominant at around the late 1820's and mid 1830's and made all the way into the early 1900's and not just fro the military i'm afraid. I wish i could give you more information on it as i'm very curious about its origin too. if you find out anymore about it please inform us.
Dan