Are you using one of those "dinolite" type magnifiers to take these pictures? I only ask because the photography is terrible and I believe that if it were "tightened" up a bit, you might be able to better clarify that subject matter you are referring to. I "think" I can see something on the upper left of the T and, truth be told, photographing some of these minor doubled dies is NOT a point and click type affair. Angle and lighting adjustments are required before each photograph to specifically highlight what the attributer is looking at.
I do the best I can. Don't have the dough to get camera, light box, copy stand, lights...... on another note that is MD most places. I'm soaking it in mineral oil, then xylene. See if it's a spot or metal by the t, also ths S has something.. also wonder the l liberty. after its a little ccleaner I'll check.