VINTAGE Authentic 90s Concert Nirvana Tshirt

The authenticity matters because the stitching makes the 90s concert versions valuable and only uses 1 seam, whereas current ones that seem to flood the market are fine but aren’t valuable as a “vintage” collectible. This is probably a child’s shirt (no tag) but I’ve worn it as a looser crop tee as seen in photo. Approximately 24”L;14”Bust Final sale. No returns.