Advertising disclosure: SignedSlabIndex is a participant in the eBay Partner Network. Links to eBay on this site are advertising, and as an eBay Partner Network affiliate we earn from qualifying purchases.
14,200 live listings   193 signers   876 confirmed sales  updated 3 min ago

Bob Gibson

Signed until 2020, so the supply is fixed — nothing new is being added to this market.

126Live listings
21Markets tracked
2Confirmed sales

By what was signed

Card51 listed · 4 grades
CertifiedListedCheapestMiddle
PSA/DNA Authenticated33$65.00$299.99view
PSA/DNA Auto 1015$89.98$438.01view
PSA/DNA Auto 92$188.88—view
PSA/DNA Auto 81$118.88—
Photo26 listed · 2 grades
CertifiedListedCheapestMiddle
PSA/DNA Authenticated25$59.00$75.00view
JSA Authenticated1$189.00—
Other20 listed · 3 grades
CertifiedListedCheapestMiddle
PSA/DNA Authenticated15$55.00$88.00view
JSA Authenticated3$56.25$100.00view
PSA/DNA Auto 102$139.99—view
First day cover7 listed · 2 grades
CertifiedListedCheapestMiddle
PSA/DNA Authenticated4$49.00$76.47view
PSA/DNA Auto 103$129.95$132.01view
Ball or equipment6 listed · 2 grades
CertifiedListedCheapestMiddle
PSA/DNA Authenticated5$99.00$126.90view
JSA Authenticated1$145.00—
Cut signature4 listed · 3 grades
CertifiedListedCheapestMiddle
PSA/DNA Auto 92$100.88—view
PSA/DNA Authenticated1$45.00—
JSA Authenticated1$49.99—
Ticket or program4 listed
CertifiedListedCheapestMiddle
PSA/DNA Authenticated4$78.99$149.99view
Document4 listed · 2 grades
CertifiedListedCheapestMiddle
PSA/DNA Authenticated3$75.00$79.95view
PSA/DNA Auto 101$135.00—
Magazine or book3 listed
CertifiedListedCheapestMiddle
PSA/DNA Authenticated3$92.00$92.00view
Apparel1 listed
CertifiedListedCheapestMiddle
JSA Authenticated1$549.99—

What has sold

DateWhatCertifiedPriceConfidence
2026-09-07Cardsee this market
1968 Topps Bob Gibson Signed PSA/DNA Auto - Sweet Card - #100 - Cy Young Season
PSA/DNA Authenticated$317.60HIGH
2026-08-31Othersee this market
2005 eTopps Classic Events BOB GIBSON Autograph PSA DNA - World Series 17K Auto
PSA/DNA Authenticated$34.00HIGH

About this signature

Status
Signed until 2020supply is fixed
Common formats
cards, photographsand 8 other types
On this index
126 listed2 confirmed sales

What does a Bob Gibson autograph cost?

From forty-five dollars to nineteen thousand, a spread of more than four hundred times. That is very wide for a signer with a modest listing count, and it means the top of his market is a small number of scarce items rather than a general price level.

What of his gets signed most often?

Cards lead, then photographs, across ten item types. The mix is typical of a Hall of Fame pitcher who signed at shows and through the post for decades.

What does his death in 2020 mean for this market?

The supply is fixed and has been for several years. He signed steadily during his life so the base is deep, but this index has recorded only a handful of confirmed sales, which is worth remembering when reading any median drawn from asking prices on this page.

Why everything here is certified

Signatures are reproduced more often than most buyers realise, by outright forgery and also by machines and assistants signing on somebody’s behalf. Every item on this page has been examined by PSA/DNA, JSA, Beckett, SGC or CGC, and this index carries nothing else. That is a deliberate restriction, and the investigation that created the modern authentication industry is worth reading, along with what a certificate actually claims.