This is a vintage Butterick 6750 men's western suit sewing pattern designed by Robert Stock.
 
The pattern includes designs for a jacket, vest, and pants with western-style pockets and details.
 
This specific envelope is for a Size 42 and was originally priced for Australian and New Zealand markets.
 
The pattern envelope has some markings and tears. The pieces are vintage used pattern pieces.
 
This is the original pattern, not a reproduction and not a pdf. 
 
The pattern pieces are unprinted. They are old-school pattern pieces.