Vintage Harris Tweed Brown Blazer Medium

Vintage tweed blazer of 100% Scottish wool. (see pic 2). Wood buttons (as far as I can tell, see pic 3). Polyester lining. No defects; it's just too big for me (~5'5" ~125#). Guessing it's around a M or maybe a smaller L. "Lady Crown" tag on the lining - presumably where it was tailored. I believe you can inquire with the Harris Tweed company using the serial number on the tag to find out more about its age or provenance.