Butterick 6942 vintage sewing pattern, dated 1993.
Package includes patterns and instructions for 8 different hats. Each hat fits small (21.5) medium (22.25) and large (23) head size.
Hat in 3 sizes: S (21 1/2"/ 55 cm), M (22 1/4" / 57 cm), and L (23" / 59 cm).
Pattern is UNCUT and factory folded. Envelope has a sticker remnant on the front.
More hat patterns here:
https://allthepreciousthings.com.au/collections/hats-bags-and-accessories