How much is an authentic kimono worth?

Hey Everyone, I have an authentic, vintage, kimono that was given to my mother when she was a little girl, so it's circa 50's or early 60's. It's gorgeous red with flowers and silk lined. I'm guessing it's child sized as she bought it for my mom way back then and it's on the small side, but not very small - probably about what a child of say 12 would wear. Since there's no tags, I don't know the actual size. This kimono is in pristine condition and it was given to me years ago. Now I'm wondering about how much it's worth. If anybody can give me your opinion, hopefully professional opinion on how much it may be worth, I'd love to know. Thanks