VIntage Ralph Lauren Rugby Size 20

Long sleeve vintage Ralph Lauren Rugby Size 20. I believe probably a small in men’s or xl boys or can a fit a woman. Colors are peach, white, purple and gray it still is in very good condition and has been freshly laundered and pressed. I do see a tiny little mark on sleeve as shown in photos. Measures pit to pit 17.5 and sleeve length from seam by shoulder to wrist is 24 inches. Very nice vintage Ralph Lauren and no barcodes on this one I am pretty sure it’s from the 1980s