1970s Steelers Jacket -- Team Issued or Retail?

[commando]

I have a lightweight Steelers jacket here, which is pretty much a windbreaker style with no inside liner. The Steelers team name is screened onto the left breast with the classic "stencil" logo style. It has the longer disco collars popular during the 1970s, and two open pockets at the bottom (there are no flaps across the top of them).

The manufacturer of the jacket is Pro Knitwear of Pittsburgh. Their tag is in the neckline of the jacket, and it is a size Large (approx. 23 inches from pit to pit, roughly a size 46).

I know Pro Kintwear made jackets for use by the Steelers team during this time. But did they ever have a license to make jackets for retail sale? I am just wondering what I have here.

Many thanks!