Did they do LAPES in WWII. I'm pretty confident the time period is correct, WWII or at latest Korea. Simply due to the time period he was in the service. I did find this that popped up with Drogue in the search. Size is about right and from what I can see of it, it looks the same. you have to enlarge the photo to see the stitching. Is is silk though, how do you tell the difference?

https://www.worthpoint.com/worthoped...gue-1843429678

And this is a possiblity: https://www.reddit.com/media?url=htt...ljcqg2aj71.jpg