I picked up a USC Co .38 short rimfire box today and found that the inner tray had printing on it for B.T. Babbitt’s ‘1776’ soap powder. I suspect that this is the original tray, as produced by the box-maker for USC Co using previously printed but unused cardboard, and is not a later replacement. It was made from a box that had never been previously folded, and dates from the same general time period as the ammunition. I’d be interested in knowing if anyone else has seen a similar USC Co box tray made from previously printed material?