Vintage O’Shea Knitting Mills Letterman Wool Varsity Knit Sweater Cardigan. The sweater was recently dry cleaned. Sweater shows signs of wear snags/hole - see pictures for condition. If you have any questions or would like additional pictures please let me know. Thanks! The Vintage O’Shea Knitting Mills Letterman Wool Varsity Knit Sweater is a classic piece of men's vintage clothing. Made with high-quality knit material, this sweater features a timeless letterman look that never goes out of style. The regular fit and iconic design make it a must-have for any vintage enthusiast or collector of speciality clothing.