Pendleton vintage wool blazer, size 6

Pendleton vintage wool blazer, size 6 Pendleton Woolen Mills Portland, Oregon 100% pure virgin wool, Made in USA Tweed gray with blue undertones with teal, rose, burgandy, and white threading 3 decorative buttons at hem of each sleeve, double breasted, one button closure, 2 pockets slit front, lined doesn't say material but could be silk. RN 4058, dry clean Worn paper tag says size 14 but that is not accurate to today's sizing. See measurements below. I would guesstimate size 6-8. Measurements: armpit to armpit = 20 inches buttoned and laying flat, length shoulder to hem = 23.5 inches, shoulder seam to sleeve hem = 20.5 inches