1979 Topps Billy Knight #51

1979 Topps Billy Knight #51 value & prices

The 1979 Topps Billy Knight #51 is a Basketball card released in 1979. Ungraded copies carry a market value of about $1.63.

An ungraded copy is worth around $1.63, a PSA 9 around $19.51, a PSA 10 (Gem Mint) around $247.50 and a pristine BGS 10 around $322.00. That's roughly a 152× premium for a gem-mint copy over raw — one of the clearest signals that condition-sensitive buyers dominate this card's market.

Is it worth grading?

With raw copies near $1.63 and top grades reaching $247.50, grading a sharp copy of this card can clearly pay for itself — the spread comfortably covers a typical ~$25.00 grading fee. The catch: only submit copies with strong centering, clean corners, and unmarked surfaces, because anything below a 9 usually erases the math.