2021 Panini Mosaic Base Set Buster Posey Silver Prizm #21
2021
See all Buster Posey cards & values2021 seasonSan Francisco GiantsBuster Posey career & card values
Common
$1.79est. value (ungraded)
Prices updated 2026-10-24
Based on recorded sold prices how we price cards
Card number
#21
Year
2021
Parallel / variant
Silver Prizm
Buster Posey price history
$286▲ 0.0%
Oct 23 · $286 low$286 high · Oct 24
PSA 10 market value, one reading a day. One-day spikes that reverse the next day are left out.
Price by month
Average price of the 2021 Panini Mosaic Base Set Buster Posey Silver Prizm #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.
Recorded high
$1.79
Recorded low
$1.79
| Month | Source | Average | Range |
|---|---|---|---|
| Oct 2026 | Market value | $1.79 | — |
Buster Posey prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $1.79 | Buy on eBay ↗ |
| PSA 8 | $7.00 | Buy on eBay ↗ |
| PSA 9 | $238.50 | Buy on eBay ↗ |
| Grade 9.5 | $262.00 | Buy on eBay ↗ |
| PSA 10 | $286.00 | Buy on eBay ↗ |
| BGS 10 | $372.00 | Buy on eBay ↗ |
| CGC 10 | $114.00 | Buy on eBay ↗ |
| SGC 10 | $172.00 | Buy on eBay ↗ |
Other versions of this Buster Posey card
28 versions, each priced on its own. Most valuable first.
Live on eBay
Affiliate — we may earn a commission2021 Panini Mosaic Base Set Buster Posey Silver Prizm #21 value & prices
The 2021 Panini Mosaic Base Set Buster Posey Silver Prizm #21 is a Baseball card (Silver Prizm parallel) released in 2021. Ungraded copies carry a market value of about $1.79.
An ungraded copy is worth around $1.79, a PSA 9 around $238.50, a PSA 10 (Gem Mint) around $286.00 and a pristine BGS 10 around $372.00. That's roughly a 160× 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 $1.79 and top grades reaching $286.00, 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.
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Buster Posey2021 Panini Mosaic Base Set2021Baseball cardsSilver PrizmPSA 10BGS 10card valueprice guide