David,
Do you have this obsolete black 50 cent-er? There's a $1 (beige) and ND (navy - no denomination) with the same A--A mold, and white Round inlay.

I'm sure you know there's two different inlays on the current $1, large and small arrowhead. The small one has feathers attached to the arrowhead. The 50 cent is current, but the 25 cent is obsolete with the same inlay.

I have the 50 cent chips pictured for trade or sale. Unfortunately they are in used condition, rim nicks, rounded edges, black scratch marks across the inlay.
LMK if you're interested.