Vintage Sateen Button Down

Reposhing this item I purchased from @_sarahthegreat. Loved it, but sleeves too short for me. Tags all removed. This was sold to me as a silk top but I think it's a poly sateen. Also listed in the Sezane category but not a Sezane branded top. I can't remove that for reposting. Also missing top middle neck button. Questions? Leave a comment below!