My best guess is O-116. I’m not 100% sure, mostly because the bottom arrowhead on this coin isn’t quite the same shape as NGC’s example, but that could be due to damage. https://www.ngccoin.com/coin-variet...ar-die-varieties-part-ii/1825-50c-o-116-2759/
If I'm correct with the "T" and "I" placement then I've successfully narrowed it down to 7 options which is where my current skill level is (my first attempt was my pickup just yesterday)