Vintage 1960s/70s Sheer Floral Blouse, Union Made

Vintage The Petite Concept by Devon floral blouse. Sheer tan fabric with pink and lavender floral print. Button-front, notched collar, long sleeves with button cuffs. No material tag, but this feels like polyester. I have machine-washed it on the gentle cycle with good results. ILGW union tag. Tag size petite large, but check measurements: 21" pit to pit and 23" long. Good vintage condition with no snags or stains.