1970S light blue dagger Collar long t-shirt

1970s light blue dagger Collar long t-shirt. Breast pocket, tag states M good vintage condition some pilling could use a shave in spots. One light stain pictured. Tag states medium not sure if was originally a men’s shirt, but is pictured on size 5/6 women’s mannequin. Light stretch Flat lay: Pit to pit: 21” Length from shoulder:27”