Here is McCalls Pattern # 7123 UNCUT Misses or Mens Cowboy / Western Shirt in size XL or XXL. Chest measurements from 42 inches to 48 inches.
Loose fitting shirts with front buttoned placket have yoke forming forward shoulder seams, extended shoulders and sleeves pleated or gathered to buttoned cuffs; view A has collar with collar band and buttoned on bib; gathered view B has collar band.
The pattern and instructions are still factory folded. The envelope shows just a little wear and creases from age and storage.