Flax Coral Linen Top/Tunic Sz M

It's hard to know whether to call this a Flax linen top or a tunic. It's in very good condition, it still has the extra button. The weave makes the fabric look like a tone on tone stripe. The size tag is missing but I would say it's a medium. Pit to pit 22", Armholes 8", across bottom 32", Length from back of neck 31"