LL Bean Boots Gumshoes Vintage

I bought these at a flea market 15 years ago. I was told they are vintage from the ‘70s. There is no indicator of size, but I am a true size 7 and they fit me perfectly. Beautifully worn in. Super comfortable. No major sign of wear. Water proof. Since I have had them, I’ve only worn them a handful of times. They’re still in the same condition they were when I bought them.