Grandads Pyjama

I have found this many times. It has showed up in boxes of clothes since I was a teenager and started to look for old clothes to try on at home and at my grandparents. I love the fabric design every time I see it. Its not a fancy pyjama but the details are nice. The pant has a buttonhole elastic in the waist back and a button fly. This is bought but there are tons of vintage sewing patterns that looks like this. One day Im going to make one that fits.