1989 Topps KayBee Superstars MARK McGWIRE #21
1989
See all MARK McGWIRE cards & values1989 seasonOakland AthleticsMark McGwire career & card values
$1.79est. value (ungraded)
Prices updated 2026-10-26
Based on recorded sold prices how we price cards
MARK McGWIRE price history
Ungraded market value, one reading a day. One-day spikes that reverse the next day are left out.
Price by month
Average price of the 1989 Topps KayBee Superstars MARK McGWIRE #21 each month, from 1 recorded price reading. Prices are re-checked regularly; a month's average counts each day from that month's first reading at the price that held that day.
| Month | Source | Average | Range |
|---|---|---|---|
| Oct 2026 | Market value | $1.79 | — |
MARK McGWIRE prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $1.79 | Buy on eBay ↗ |
| PSA 9 | $30.19 | Buy on eBay ↗ |
| Grade 9.5 | $33.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission1989 Topps KayBee Superstars MARK McGWIRE #21 value & prices
The 1989 Topps KayBee Superstars MARK McGWIRE #21 is a Baseball card released in 1989. Ungraded copies carry a market value of about $1.79.
An ungraded copy is worth around $1.79 and a PSA 9 around $30.19.
Is it worth grading?
The spread between raw ($1.79) and top-graded ($30.19) copies is fairly tight, so grading this card only makes financial sense for truly flawless copies — or for collectors who simply prefer slabbed cards for protection and display.
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