There are (or rather, were) lots of those "orchid pinks", or" light lavenders" around.....I'm thinking it's a Sass iris, from late '20's-early '30's.....maybe "Pink Opal" ?
I think "Helen Field Fischer" is a bit too "pink", and the beard is too "sparse"
Does it have any "scent" ? And, if so, how would you describe it ?"