This is Tony Dorsett's Topps rookie card. Dorsett led the Cowboys to a Super Bowl victory the previous year. The 1978 Topps football set is not one of Topps best looking designs. Here is how the card has done in value through the years:
(Fall 1982) Renata Galasso $2.50
10/1996 Sports Card Mag $35.00
4/2005 Beckett Football $25.00-40.00
Last week on Ebay (avg price) $18.02 (40 sales)
Dorsett's rookie card has values that are very similar to Franco Harris's rookie card. This card is not selling for what its price guide card value was in the last 5-15 years.