Vintage Men's Mod suit- size M

This is a really cool, really rare, one of a kind vintage men's mod style suit. It's got a shawl collar, herringbone 2 tone, (turquoise and purple). There are no labels or sizes, but I am a size medium. The pants are about a 33waist /31 length... approx 19 inches from shoulder to shoulder... approx 25 inches from shoulder to sleeve... from the collar down the back, it's approx 29 inches. I have no idea what the brand is (see inside jacket). There's a little wear (see pics.) 😀