Harry Kelley #121 Price Guide
Baseball · Baseball Cards 1937 O Pee Chee · Released 1937
Harry Kelley #121 (Baseball Cards 1937 O Pee Chee) is currently worth $61.06 raw (near mint) (as of Sep 4, 2026). Values come from the PriceCharting price guide and are refreshed weekly. Grading is the single biggest value lever — check the raw-to-PSA-10 gap below, then scan your copy to see if its centering makes the grade.
These live in the Midpoint app for iPhone and Android. Free to start.
Current prices
Raw (ungraded)
| Ungraded | $61.06 |
Graded — grade ladder
Last updated 2026-09-04 · Source: the PriceCharting price guide
Shop this card on eBay ↗As an eBay Partner, Midpoint may earn commission from qualifying purchases.
Price history
Is it worth grading?
Strong grading candidate — 5.7× premium in Grade 7
A Grade 7 Harry Kelley #121 sells for $345 against $61.06 raw: a $284 spread, 5.7× the ungraded price. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
Full grading break-even for Harry Kelley #121: fee tiers, best grader, gem-rate math →
Should I pay this?
Enter the seller’s asking price to see your net outcome per grade.
More from 1937 O Pee Chee
Full set checklist →
More Harry Kelley cards
All Harry Kelley cards →Best on iPhone & Android
Check your baseball card in the Midpoint app
Scan with your camera to measure centering to the millimeter, get an AI grade with corner and edge close-ups, see what your copy is worth, and track it in your portfolio. Free to start.
Price alert
Watching this card? Set a line and Midpoint tells you the day the market crosses it — waiting to buy the dip or sell the spike.
Harry Kelley #121 — frequently asked
How much is Harry Kelley #121 (Baseball Cards 1937 O Pee Chee) worth?
As of Sep 4, 2026, Harry Kelley #121 (Baseball Cards 1937 O Pee Chee): an ungraded near-mint copy sells for about $61.06, a Grade 7 sells for about $345. Values come from the PriceCharting price guide and are refreshed weekly.
Is Harry Kelley #121 worth grading?
A Grade 7 Harry Kelley #121 sells for $345 against $61.06 raw: a $284 spread, 5.7× the ungraded price. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
Is Harry Kelley #121 going up or down in value?
Harry Kelley #121 (Baseball Cards 1937 O Pee Chee) is up 0% over the last 30 days (raw market). Short-term moves on individual cards are noisy — check the price history above for the trend.
Where do these Baseball card prices come from?
Prices are the PriceCharting price guide, refreshed weekly. Raw values reflect near-mint (NM) ungraded copies; graded values are per grading company and grade.