What is the starting resale value for this card?

Ungraded copies of the Roy McMillan #421 are currently valued starting at $3.

How much is a PSA 10 version worth?

A PSA 10 graded copy of this 1966 Topps Baseball card sells for $487.

Is the condition of the card the biggest factor in price?

Yes, condition is key; the price jumps significantly from the ungraded $3 to the PSA 10's $487.

Roy McMillan #421 1966 Topps Baseball — Card Value

Name: Roy McMillan #421 1966 Topps Baseball — Card Value
Brand: Baseball

1966 Topps Baseball

What the Roy McMillan #421 (1966 Topps Baseball) card is worth — ungraded vs graded.

Roy McMillan #421 1966 Topps Baseball value — Ungraded $3 · Grade 9 $128 · PSA 10 $487. Prices updated July 2026.

Set · 1966 Topps BaseballNumber · #421

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Value by grade

Ungraded

42.7×

$128

Grade 9

162.3×

$487

PSA 10

Real sold prices per grade — the PSA 10 premium on this card is 162.3× raw.

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SportsCardsPro — Roy McMillan #421 1966 Topps Baseball$2.77

Item details

Brand: Baseball
Set: 1966 Topps Baseball
Sport: Baseball
Number: #421

Roy McMillan #421 1966 Topps Baseball value

A raw (ungraded) Roy McMillan #421 runs around $3, a Grade 9 about $128, and a PSA 10 commands $487.

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	$3	eBay sold comps
Grade 9	$128	eBay sold comps
PSA 10	$487	eBay sold comps

Frequently asked questions

What is the starting resale value for this card?: Ungraded copies of the Roy McMillan #421 are currently valued starting at $3.
How much is a PSA 10 version worth?: A PSA 10 graded copy of this 1966 Topps Baseball card sells for $487.
Is the condition of the card the biggest factor in price?: Yes, condition is key; the price jumps significantly from the ungraded $3 to the PSA 10's $487.