*VERY RARE VINTAGE* USA White Short Sleeve T-shirt Women's Small Retro

I have never been able to find another one, and I have searched a lot! I do not know the exact age of this shirt. There is a small orange spot on the back which I showed in pics. The 4th pic, upper right shoulder, if u look really close there's a very light pink spot. On the front, right below the color, there's a tiny dark spot. I have not tried or attempted to get any of these spots out, idk what they are or if u can scrub/soak them out. Besides those things, this is a AWESOME shirt. It's has a very soft feel and made very well. There is no stitching coming out, the quality is amazing! Any questions don't hesitate to ask. Non smoking home, clean, no bugs. I only use GAIN laundry detergent, and I don't wear perfumes.