EUC Rare Japanese Trench Coat - 4 - 55 - What a SHEEN! Rainy Day Style ☔️

I don’t know how to pronounce this designer but it’s Japanese and has that precise style. There’s a subtle sheen to the fabric that gives it flair. Noticed a slight water stain on one side so took a photo but it’s hard to capture. Did not dry clean so don’t know if it will come out. 14 1/2 inches from shoulder to shoulder Almost 18 inches across chest 37 inches in length