What is the starting resale price for this card?

The ungraded version of the Mike Harkey #742 is listed with a starting resale value of $2.

How much is a graded PSA 10 version worth?

A PSA 10 graded copy of this 1989 Topps Baseball card sells for $29.

Is the ungraded condition significantly cheaper than the graded versions?

Yes, the ungraded condition is significantly less expensive, starting at $2 compared to the $29 for a PSA 10.

Mike Harkey #742 1989 Topps Baseball — Card Value

Name: Mike Harkey #742 1989 Topps Baseball — Card Value
Brand: Baseball

1989 Topps Baseball

What the Mike Harkey #742 (1989 Topps Baseball) card is worth — ungraded vs graded.

Mike Harkey #742 1989 Topps Baseball value — Ungraded $2 · Grade 9 $21 · PSA 10 $29. Prices updated July 2026.

Set · 1989 Topps BaseballNumber · #742

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Value by grade

Ungraded

10.5×

$21

Grade 9

14.5×

$29

PSA 10

Real sold prices per grade — the PSA 10 premium on this card is 14.5× raw.

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JunkPal AI· resale insightanalyzing sold comps…

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Price data verified against · 1

SportsCardsPro — Mike Harkey #742 1989 Topps Baseball$1.82

Item details

Brand: Baseball
Set: 1989 Topps Baseball
Sport: Baseball
Number: #742

Mike Harkey #742 1989 Topps Baseball value

A raw (ungraded) Mike Harkey #742 runs around $2, a Grade 9 about $21, and a PSA 10 commands $29.

What drives the price

Grade, centering, rookie/star status, set scarcity, and print run drive sports-card value. PSA/BGS gem-mint copies and rookies of stars carry the biggest premiums; raw commons sell for little.

Price guide

Sold values by grade vs. what sellers ask today

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Condition	Value	Based on
Ungraded	$2	eBay sold comps
Grade 9	$21	eBay sold comps
PSA 10	$29	eBay sold comps

Frequently asked questions

What is the starting resale price for this card?: The ungraded version of the Mike Harkey #742 is listed with a starting resale value of $2.
How much is a graded PSA 10 version worth?: A PSA 10 graded copy of this 1989 Topps Baseball card sells for $29.
Is the ungraded condition significantly cheaper than the graded versions?: Yes, the ungraded condition is significantly less expensive, starting at $2 compared to the $29 for a PSA 10.