Small pink pill. Round. T 21 on one side and a capital cursive style W on the otherside enclosed in a box (Winthrop?). I have tried all identification websites and no luck. When I found this bottle in one of my rental houses after a tenant left, it had an old, old label scotch taped to the bottle. Talwin. Pentazocine HCL 50mg. I don't trust the label.