Finally caught the ghost!!!
July 20, 2026 5 min read
One-of-one (1/1) sports cards are some of the most exciting cards in the hobby.
After all, only one copy of that specific card exists.
But does that automatically make every 1-of-1 card valuable?
The short answer is:
Most of the time—but not always.
While scarcity is incredibly important, it's only one factor that determines a card's value.
The player, the set, whether it's a rookie card, whether it's autographed, and even the type of memorabilia included can all have a major impact on what a 1-of-1 card is worth.
Let's take a closer look.
A 1-of-1 card is exactly what it sounds like.
It is the only copy of that specific card produced by the manufacturer.
Instead of being serial numbered to:
A 1-of-1 card is serial numbered:
1/1
No identical copy of that exact card exists.
That level of rarity makes 1-of-1 cards some of the most sought-after cards in the hobby.
Not necessarily.
Being the only copy certainly helps, but rarity alone doesn't guarantee high value.
Think about it this way.
A one-of-one card of a Hall of Famer or global superstar will almost always attract much more demand than a one-of-one card of a player with a limited collector following.
In sports cards, demand is just as important as rarity.
The single biggest factor is usually the athlete.
A 1-of-1 card of players like:
will generally generate significantly more interest than a 1-of-1 card of an average player.
Collectors ultimately determine value through demand.
The stronger the player market, the more valuable the card is likely to be.
If the card is also a rookie card, its value often increases.
Collectors frequently prioritize rookie cards because they represent a player's first officially licensed cards.
A 1-of-1 rookie card is often considered one of the most desirable cards that player will ever have.
The card's manufacturer and product line also play a major role.
Collectors often place a premium on flagship or high-end releases.
For example:
These products generally have stronger collector demand than lower-tier releases.
A 1-of-1 from a premium product will often sell for considerably more than a 1-of-1 from a less popular set.
Many collectors specifically seek autographed 1-of-1 cards.
If a card combines:
it can become one of the most desirable cards that athlete has.
Autographs add another layer of scarcity and collector appeal.
Some of the most valuable modern 1-of-1 cards include game-used memorabilia.
Large multicolor patches, team logos, laundry tags, or Nike swooshes taken from game-worn jerseys can make a card even more attractive.
Products like National Treasures and Immaculate Collection are well known for producing premium memorabilia cards that collectors actively pursue.
This is one of the biggest misconceptions in the hobby.
Many new collectors assume a 1-of-1 means it's the only one-of-one card that athlete has.
That's not true.
A player may have:
Over the course of a single season, one player may have dozens—or even hundreds—of different 1-of-1 cards.
Each individual card is unique.
But it isn't the player's only one-of-one card.
Usually, less than you might think.
With most sports cards, collectors compare:
But with a 1-of-1 card, there isn't another identical copy to compare it against.
Because of that, the grade often has less impact on value than it would for a card with hundreds or thousands of copies.
That's not to say grading doesn't matter at all.
A PSA 10 or Gem Mint grade can still make a card more attractive to some buyers.
However, most collectors purchasing a true 1-of-1 are primarily focused on the card itself rather than comparing it to another copy.
Some of the biggest factors include:
The more of these boxes a card checks, the more valuable it is likely to become.
In our experience, most 1-of-1 cards are highly collectible because collectors naturally appreciate owning something unique.
However, we never recommend judging a card's value based solely on the "1/1" stamp.
Instead, look at the complete picture:
Those factors often have just as much influence on value as the serial number itself.
Most 1-of-1 sports cards are valuable because they combine extreme rarity with collector demand.
But rarity alone isn't enough.
The athlete, product line, rookie status, autograph, memorabilia, and overall popularity all play major roles in determining what a 1-of-1 card is worth.
If you're evaluating a 1-of-1 card, don't just ask, "Is it one-of-one?"
Also ask, "Is it a one-of-one that collectors actually want?"
That question usually matters even more.
Not always. Most are desirable because of their rarity, but the player's popularity, product line, rookie status, autograph, and collector demand all affect value.
It means only one copy of that specific card was produced by the manufacturer.
Often, yes. Rookie 1-of-1 cards are typically among the most desirable cards of a player's career.
Yes. Many athletes have dozens or even hundreds of different 1-of-1 cards across various products, parallels, inserts, and seasons.
Usually less than with other cards. Since there isn't another identical copy to compare against, collectors tend to focus more on the card itself than the grade, although a high grade can still add appeal.
In many cases, yes. A 1-of-1 card with an on-card autograph and game-used memorabilia is often among the most desirable modern cards for that player.
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Finally caught the ghost!!!
Matt P. 5/5 Verified
Great to add another one to the 70 Topps set. Fantastic service!
Michael M. 5/5 Verified
All hail the Chief!!! Robert Parrish .. 4x NBA champion inscription.. Double 00..
Troy H. 5/5 Verified
I waited a long time for this one especially being a huge fan of the Showtime era Lakers. Kevin Mchale was a thorn in my side but I have the utmost respect for him and the Celtics.. A great addition to my growing collection..
Troy H. 5/5 Verified
The Hall of Fame ticket!! Earl Campbell thanks to the team at PSM!! Keep up the good work!!
Troy H. 5/5 Verified
My new favorite Funko!! #1 … Warren Moon
Troy H. 5/5 Verified
Nice autograph
Arturo A. 5/5 Verified
The autograph looks great and full
Arturo A. 5/5 Verified
Signature smaller than I requested...
Arturo A. 5/5 Verified
Came out great!
Arturo A. 5/5 Verified
Came out good
Arturo A. 5/5 Verified
PSM always does an excellent job. They took care of my Dream rookie card. I like the fact that when I send my items into PSM I never have to worry about them.
Randy P. 5/5 Verified
The CJ auto hits for me. Upper Deck, sharp placement, and honestly, it makes my collection much better. Greatly appreciate the auto.
Joseph M. 5/5 Verified
AWESOME
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So awesome
Jeffrey E. 5/5 Verified
Beautiful
Jeffrey E. 5/5 Verified
Sweet
Jeffrey E. 5/5 Verified
Beautiful
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Great piece
Jeffrey E. 5/5 Verified
Awesome
Jeffrey E. 5/5 Verified
Smooth transaction
Jeffrey E. 5/5 Verified
AWESOME
Jeffrey E. 5/5 Verified
Beautiful piece of memorabilia!!!
Jeffrey E. 5/5 Verified
To finally get one of my baseball idols is an absolute dream come true but to get this card with an on card auto really made it all worth the wait! Thank you!!
Michael R. 5/5 Verified
Excellent service with this signing. Thank you!
Michael M. 5/5 Verified
Autograph came out great!
Arturo A. 5/5 Verified
Awesome experience as always, I’d highly recommend Powers to anyone looking to expand their sports memorabilia collection!
Jason R. 5/5 Verified
Once again, Powers Sports came through big time! I had been waiting for many, many years to have this mini helmet signed by Carson Palmer. With special thanks to Natalie and Mathew, they were able to coordinate this endeavor exactly as I wanted it. Excellent autograph, perfectly positioned, using the exact paint pen requested and the C.O.A. sticker positioned right where I wanted it. Thank you folks so very much!
Vincent G. 5/5 Verified
Matt and his team did a great job as usual. I highly recommend power’s!
Jason K. 5/5 Verified
Always great dealing with Powers. Got to watch Earl Singing on their website. Couldn't be happier with the helmet and the signature. Another perfect purchase. Thanks Powers crew!
William M. 5/5 Verified
I submitted 2 cards for signing by Dennis Rodman and came back very nice but one of the cards corner was damaged when returned back. Thank you Matt Powers and his team for this signing event.
Raymond T. 4/5 Verified
I submitted 2 cards for signing by Hakeem Olajuwon & came back very nice. Thank you Matt Powers and his team for this signing event.
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Power Sports Memorabilia is the best and always my "go to" autograph company to deal with. They are so accommodating and always get what you want and how you want it !!!! A+ on ALL counts !!!
Michael T. 5/5 Verified
I wasn't at the convention to be there for his signing. However, he has a killer autograph very happy with this autograph
Christopher C. 5/5 Verified
Another great jersey signing!
Joseph C. 5/5 Verified
PSM never let's me down. Another great auto on my multi signed piece. Thank you again.
Dustin D. 5/5 Verified
The Barry Larkin auto in my PC is pure heat. Crisp ink, great placement, total keeper.
Joseph M. 5/5 Verified
Just received by Bo Jackson Rookie Card back from Powers Sports Memorabilia. Once again, Powers Sports was able to get my card signed exactly as requested. Excellent signature, perfectly positioned and using the right kind and color marker.
Vincent G. 5/5 Verified
Everything at Powers is first rate. They posted the videos on Facebook so I actually got to watch LT sign my helmet. And then they shipped me my helmet it's perfect could not be happier.
William M. 5/5 Verified
Had to get one of the coolest catchers in the game short man wacks that bat
Steven R. 5/5 Verified
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