1970s Vintage Button-Up Shirt / Pyjama Top

The straight cut at the bottom and the pocket on the side make me think it's a pyjama top initially, but you definitely can wear it as a shirt! Size 18 (junior) on tag I'm XS for reference Please check approximate flate measurements: Shoulders: 16.5 in / 42 cm Pit to pit: 21.5 in / 54,5 cm Length: 25 in / 63,5 cm Made in Taiwan You like the item but not the price? Feel free to sene an offer!