60s Green Plaid Jumper Dress Sleeveless XS S Vintage Possibly Wool

60s Green Plaid Sleeveless Jumper Dress with World Buttons at Shoulders - Union made in 60s (tag in skirt) Measures 17" across underarm to underarm, not stretchy so 32" bust fits well and waist is not defined/34" hips/ 34.5” long. 18" bodice - shoulder to drop waist. Shown on 5'8" mannequin with measurements 32/26/34. Material feels like soft wool blend with partial acetate lining. Lining has some variation in color - see photo of inside of dress. Skirt does not have lining. Condition is good! Material is in good shape without holes/frays etc. Lining does have some discoloration as shown.