VINTAGE 70s plaid dagger Collar button down 3/4 sleeve top

Vintage 70s plaid dagger Collar button down 3/4 sleeve top Union label Good condition unsure of fabric content heavier material. Some seems around armpits have are separating, can be sewn or hand stitched back together see photos Fits like small to medium boxy shape pictured on size 5/6 mannequin Flat lay measurements Shoulder: 13.5” Pit to pit: 20” Sleeve length 21” Length 28”