Beautiful long knit cardigan (No tag)

This is a no tag (No brand) pre-owned long knit cardigan. Simple casual style. 4 buttons. Slits on both side. On the mannequin, rom shoulder down to bottom, length is about 48”-49” Appears to be sized S/M. Can be worn open, or buttoned up. I’m not sure what the material consists of. I did hand wash with detergent, rinse and then hung it to dry. I’m pretty sure it can also be shaped, and then laid out in towel to dry.