Thunder Bay vintage red coat - Youth

Vintage red coat by Thunder Bay Fashions. Pure virgin wool. Made in Canada. Size not marked; length shoulder to bottom edge is 29in and width armpit to armpit is 15-16in. It fit me snug as a petite XS adult (I am 5’3 but it would fit better on someone shorter as the sleeves were 2-3in short for me). If I were to guess then size 12-14 Girls as it’s the youth size that usually fits me. Thrifted at a vintage store originally so unsure of the exact origin date.