This. And I was the one who coined that whole "circulated cameo" phrase, so here's my stamp of approval. I'm looking for a CircCam DB half myself, when I get my ducks in a row.
Mmmm Try toothpaste. It has a mild abrasive in it that acts like polish. You have to work it a bit, but it does polish plastic quite well. BTW, I believe there is stem and no stem that year. Yours is “stem”.
I'm into Walking Liberty halves, and it kind of blows my mind that no denomination is offered on the coin. A beautiful coin, for sure!
I have the exact same variety (pointed 6 stem through claw) in the exact same grade, also PCGS. I bought it raw back in the 90’s and had it slabbed a few years ago. The details on yours are similar or maybe a tad better, and mine has a couple of minor borderline issues. Based on that I think yours is solid for the grade.