Based on the "529" stamp on the back of the button, it's likely from the 1980s or later. The inner tag is unreadable due to damage. I purchased this item from a used clothing store 20 years ago and have kept it stored at home. The damage is as shown in the photos, and it was present when I bought it. Length: Approximately 61cm Shoulder width: Approximately 41cm Width: Approximately 52cm Sleeve length: Approximately 61cm *Measured flat