Baseball cards are one of the most collected hobbies in America. For over a century, kids and adults alike have enjoyed trading, collecting and holding onto these iconic pieces of cardboard. Some cards have become extremely rare and valuable over time as the players featured became legends of the game. Here is an in-depth look at generally agreed upon as the 25 most valuable and iconic baseball cards of all time:

1998 Bowman Chrome Refractors #33 – Kerry Wood: Kerry Wood’s rookie season in 1998 was one of the most impressive in baseball history. He struck out 20 batters in a single game as a rookie, still holding the record. His rookie cards from that year are some of the most sought after, with the Bowman Chrome version being the rarest printing. Graded gem mint 10 copies have sold for over $5,000, making it one of the pricier 1990s rookie cards.

1964 Topps #232 – Sandy Koufax: Hall of Famer Sandy Koufax is considered one of the greatest pitchers ever. His 1964 card stands out both for his accomplishments by that point in his career as well as the smaller printing run compared to other 1964 Topps issues, making it more difficult to find in top condition. PSA 10 versions of this Koufax rookie card have reached $6,000 at auction.

1952 Topps #179 – Mickey Mantle: The Mick’s rookie card is highly coveted by collectors and Yankee fans alike. Mantle went on to have a Hall of Fame career and this card captures him at the start. High grades can sell for $7,000 or more thanks to its significance as one of the earliest post-WWII baseball cards released.

2007 Bowman Chrome Draft RC #BDP1 – Josh Hamilton: Josh Hamilton’s story of personal struggles and redemption makes his rookie cards even more sought after. The Bowman Chrome variation of his draft pick card is considered the cream of the crop due to the parallel’s swirly refractors. Mint copies have reached $7,500 at auction.

2009 Bowman Sterling #157 – Stephen Strasburg: Stephen Strasburg was one of the most hyped pitching prospects ever when he was drafted first overall in 2009. His rookie cards exploded in demand and value, led by the parallel versions like Bowman Sterling. Pristine copies in this parallel have topped $8,000 at auction.

1955 Topps #233 – Willie Mays: The Say Hey Kid’s rookie card ranks among the hobby’s most desirable issues. Mays became arguably the greatest all-around player ever and his first card is a true piece of baseball history. High grade PSA/BGS slabbed examples have sold for $9,000.

1994 Stadium Club #132 – Derek Jeter: A star from day one both on the field and in cardboard, Derek Jeter’s rookie cards remain hot commodities. The exclusive parallel prints like 1994 Stadium Club are the crème de la crème, with mint copies reaching five figures at auction.

2015 Topps Update #US150 – Bryce Harper: Bryce Harper has continued living up to the hype that made his Bowman Chrome rookie cards skyrocket in price years ago. His first Topps card portrays him as a Major League star and highly coveted by both Harper collectors and investors. PSA 10’s have sold for over $10,000.

1962 Topps #5 – Willie Mays: Considered the greatest baseball card of all time by some, Willie Mays’ rookie card took on legend status of its own. It features perhaps the greatest player ever in action during one of his most prolific seasons. High graded examples crack the top 10 most expensive cards ever when they come up for auction.

2007 Bowman Sterling Blue Refractors #BDP-BR – Mike Trout: Many consider Mike Trout the best all-around player currently in the game, and his earliest cards predictively exploded in demand. The rarest parallel, Bowman Sterling Blue Refractors, has reached $12,000 in PSA Gem Mint 10 condition for his draft pick rookie card issue.

2009 Topps 206 #52 – Stephen Strasburg: Topps captured Strasburg during his record-setting pitching debut for Washington. It’s considered one of the top “modern” rookie cards and grades well. Pristine PSA 10’s have sold in the $15,000 area.

1957 Topps #181 – Hank Aaron: “Hammerin'” Hank Aaron’s rookie card puts collectors in the presence of greatness before he shattered Babe Ruth’s home run record. On the verge of superstardom at the time, pristine PSA/BGS 10 examples have sold for $16,000+.

2003 SP Authentic Signs of #3 – Jeter/Nomar/A-Rod: This spectacular triple autograph patch parallel print run of only 10 copies makes it one of the true HOF triumvirate cards. Two have been known to sell through industry insiders for $20,000 each despite never hitting the official market.

1951 Bowman #179 – Mickey Mantle: Considered one of the premier vintage cards, Mantle’s first card pre-dates Topps and is far rarer in high grade. The “Hollywood Card” moniker accentuates its history and status as a cornerstone of the collecting hobby. Graded gem mint specimens have sold for over $25,000.

1909-11 T206 White Border #116 – Honus Wagner: One of the original “Hollywood” cards depicting one of the earliest superstars, Wagner’s is the most coveted card in hobby history. The rarity, subject’s legendary skill, and card’s age make high grade copies worth monumental sums when available. One PSA NM-MT 8 sold for $3.12 million in 2016, still the record price.

1911 Standard Tobacco #3 – Nap Lajoie: The “Green Lantern” card is one of the rarest early issues and captures future Hall of Famer Nap Lajoie during his playing days. Only 5-6 high graded examples are known to exist in a marketplace starving to see copies emerge. When key specimens do become available, bidding routinely exceeds $100,000.

1933 Goudey #53 – Babe Ruth: One of the final issues to capture the Bambino during his illustrious playing career, the 1933 Goudey set took the offerings of the time to new heights. The explosive demand from both vintage collectors and Ruth devotees means near-mint copies sell over $150,000.

1909-11 T206 White Border #101 – Eddie Plank: Widely considered the second rarest T206 after Wagner, the card pays tribute to A’s southpaw Eddie Plank. At most a handful are known to exist and only a single PSA 8 is public, having sold at auction for $175,000. A pristine PSA/BGS condition 10 specimen, were one to surface, would likely break records.

1915 Cracker Jack #569 – Joe Jackson: Collectors and historians are still searching for an original high grade example of “Shoeless” Joe Jackson’s lone cardboard issue over 100 years later. Jackson’s infamous banishment from baseball for his role in the 1919 “Black Sox” scandal only adds to its cultural significance. Should a copy surface that can authenticate to the highest standards, it could command sums over $250,000 ungraded.

1986 Fleer Update #US1 – Ken Griffey Jr: Known as the “Rookie Update” card, this 1986 issue brought Griffey mania to the hobby world before he ever played a game. Considered the most valuable 1980s card issued in a large mainstream set, pristine PSA 10 examples have recently sold for $340,000, crossing the $100,000 barrier for the first time.

1909-11 T206 White Border #93 – Victor “Kid” Elberfeld: At the absolute pinnacle of baseball card values lies one of the most genuinely rare early cards, that of Victor “Kid” Elberfeld. No higher than two graded specimens are known in a format and subject of obvious historical prestige. One such copy, a PSA NM-MT 8, sold for an astonishing $480,000 in a 2012 private agreement. Should a superior condition ever emerge, that figure could readily double or more.

1909-11 T206 White Border #108 – Amos Rusie: Featuring a turn-of-the-century pitching great, Amos Rusie’s T206 hails from one of the first iconic baseball card sets. Its scarcity is unmatched with a single graded piece known, a PSA 5 that took in $657,250 in 2016 in a landmark transaction to become the 4th most valuable card in history. A rediscovered higher grade example could theoretically demand in excess of $1 million.

1909-11 T206 White Border #140 – Eddie Cicotte: Eddie Cicotte’s T206 tops the charts as one of the most legendary rarities in the hobby. Like Rusie, only a lone specimen is publicly recorded, a lowly PSA 2. But its significance as part of the scandalous 1920 White Sox drove it to $686,000, establishing a new record for a private card sale. An improved graded piece would surely become a true prize for any seven-figure enthusiast collection.