1980s Cropped Tie Front Blouse, Size S/M, Tropical Print Top maxi I'm thinking maybe it rusted

I'm thinking maybe it rusted underneath the fabric

Brand - National Shirt Shop

Size - labeled Large but measures like a modern size XS/S so it’s probably junior’s sizing - the mannequin is a modern size 6

There is a very very faint halo under each arm hole

1980s Cropped Tie Front Blouse, Size S/M, Tropical Print Top maxi I'm thinking maybe it rustedDescription Cute cropped blouse from the 80s with various tropical scenes including the beach, flowers, and fruit. It ties in the front and there is elastic in the back hem. *The shorts in the photos are available separately* Details Brand Universal Dry Goods Content 100% cotton Size Labeled Large but I think it would be better for a modern S M so please check measurements to ensure fit Shoulders 21" across (with edges cuffed) Chest 19" pit to pit