From Brooks Brothers Makers range (in house and more limited), a classic tweed sports coat.
Lined upper, three buttons, single vented. Beautiful leather buttons. Patch pockets in front.
Quite timeless. Excellent almost like new condition, this is probably 60’s-early 70’s. Missing one button on left cuff. You could get a leather button or a wooden one and would blend in fine.
Sz 41: 22” armpit to armpit, 32” length, 18” shoulder seam to shoulder seam, 25” shoulder seam to end of cuff (34.75” total sleeve).