Men's Vintage Tweed B/W Jacket

Vintage with an interesting provenance. Label says "Bently Madison for Mr. Z" and I found an ad in Texas Monthly from December 1981 introducing "America's Newest Designer" exclusively at Mr. Z, a local Houston, TX men's shop that specialized in fitting broad shouldered, small-waisted men. This would be from that era. Athletic fit that is either hard to find or expensive! This jacket is in excellent condition, the only signs of age being some minor discoloration in the lining (see photos). Content tag missing but believe is silk. Size 46R