Vintage Brooks Brothers Pure Wool Cardigan Navy Mens Medium Leather Elbow Button

So Retro Vintage Brooks Brothers 100% Pure Wool Cardigan Color is Navy with thin yellow plaid lines Is a Mens Medium but great on a woman as well for a boyfriend look. I don't know the exact age of this as brooks brothers has had a similar label for a long time. But the Leather Elbow pads/patches and leather ball Buttons makes me think its possibly 1970s This is really excellent condition!!