Hand knit 3/4 sleeve pull over crew neck sweater grey and teal

In beautiful pre-loved condition hand knit sweater. Bottom colour is a heather grey and top is heather teal. 3/4 sleeve Nice and soft. No rips, holes, tears or stains. Unsure of material content; however, it feels like wool or a wool blend (not certain). I am estimating this to be a size large or could be an oversize medium. Please review measurements below to ensure a proper fit. Laid flat measurements: Pit to pit: 23" Outer sleeve length from shoulder seam to cuff: 20.25" Inner sleeve length from pit to cuff: 14" Center back length from neckline to bottom hem: 26"