I'd imagine it's a size small or medium. I'm 5'6 and it fit me pretty well over my uniform, with room to spare.
Please note it's missing a button, which I've pointed out. I'm hoping this goes to someone who still enjoys WWII reenacting or is just getting started with the hobby! Feel free to ask questions.
The item "Replica WW2 German Overcoat WWII" is in sale since Friday, September 18, 2020. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Reproductions\Germany".
The seller is "bossanovamartini" and is located in Everett, Washington. This item can be shipped to United States.