Robin Yount Rookie Card

[Danimal]

Hey this might be off the beaten path, but I saw a Robin Yount "Rookie Card" available in an antique store. They wanted $39, but the owner quickly offerd it for $30. I'm not sure which brand, but it was a common one from 1977. On the back, it showed stats for two partial seasons in which his combined BA was .250.
Is this a real rookie card? The outer protective plastic labled it as a rookie card.
Also, anyone know what the real market value would be? It appeared to be in very good condition.
Feel free to PM me with an answer.

Go Brewers!
from Indiana...
Dan Spalding

[Steelers Rule]

yount has a topps rookie card 1975

[Danimal]

Thanks!