clipped wing dirt tracker?

[Aero426]

Here's one more, same year and track.

Check out the steep wing angle cranked into it for the flat mile track.

[Aero426]

I'm sure this is a very rare piece - I've sure never seen another.    It's a Roger McCluskey hero card from the 1972 season.    I have no idea where it came from and it's not in the best of shape.    The signature is a copy of Roger's autograph printed on the card.    I came across it by accident and thought I would scan it before it disappears into the abyss.

[held1823]

 i sorted through my photo files and realized i had seen the 1972 livery without even knowing it. i have no clue where i saved these from over the years.