Baseball cards have been a popular collectible memorabilia item for over a century. From the late 1800s through present day, billions upon billions of baseball cards have found their way into the hands of eager young fans and seasoned collectors alike. With such an enormous quantity of cards produced over so many decades, it’s no surprise that some collectors amass collections numbering in the tens of thousands, hundreds of thousands, or even millions of individual cards.

But what about collections measured not just in individual cards, but in actual tons? Believe it or not, some dedicated baseball card collectors have amassed accumulations so huge they are quantified using the 2,000+ pound measurement of tons. How does one accumulate baseball cards by the ton? It takes dedication, perseverance, and deep pockets to attain such monolithic collections. Let’s take a look at a few examples of collectors who have reached the pinnacle of the hobby by accumulating baseball cards in tons.

One of the biggest collectors of modern times is actor Nicolas Cage. At the peak of his collection in the late 1980s and early 1990s, Cage’s stash of cards was estimated to weigh in at a whopping 6 tons. That’s 12,000 pounds of cardboard, ink and nostalgia packed into his storage units. Cage achieved this monumental tally through relentless buying at shows, auctions and via private dealers. He spent millions acquiring rare vintage cards, complete sets and stockpiles of commons and uncommons from every era. Cage’s collection encompassed the breadth of baseball card history, with representatives from tobacco issues of the 1910s through the modern junk wax era of the late 80s.

While Cage has since pared down his collection significantly, other mega-collectors continue expanding their hoards into the multi-ton range. Jonathan Fantel, owner of the Sportscard Collectors Shop in New Jersey, claims to have amassed a mind-boggling 15 tons of cards over several decades of intense collecting and accumulation. Fantel leverages his vast inventory to run one of the largest and most successful trading card distributors worldwide. Shelves at his New Jersey warehouse are crammed with millions of pristine and well-organized cards ready to fill hobbyist needs.

Another renowned baseball card powerhouse is Texas cattleman and oil executive Dale Peterson. Peterson estimates his personal collection weighs in at a hulking 10 tons concentrated mainly in pre-war tobacco issues. Peterson’s T206 White Border Ty Cobb is considered by many to be the finest knownexample in existence and is worth millions alone. Peterson achieved his multi-ton status by aggressively purchasing entire collections from retiring collectors or estates. His deep pockets and buying power allowed him to sweep up huge tranches of vintage rarities that took others a lifetime to assemble.

Keeping with the Lone Star state theme, Texan Jim Comorosky’s legendary collection was reported to weigh 8 tons at its 1990s peak. Comorosky focused more on complete high-grade sets from the 1950s and 1960s versus individual superstars. His archive included pristine examples of every topps, fleer and bowman issues imaginable. Only illness and advancing age curtailed Comorosky’s acquisition spree in later years. His peers considered Comorosky’s sets the finest of their kind to ever come to market.

This brings us to one of the undisputed kings of killer collections – card magnate Bill Mastro. The Connecticut-based Mastro is said to maintain an awe-inspiring 20 tons of cards at his sprawling hobby headquarters. Mastro’s realm stretches to include every sport and area of collecting imaginable. But his true bread and butter remains his legendary baseball inventory spanning the entire history of the sport up to present. Mastro leverages his warehouse of wonders to fuel his highly successful Mastro Net Auctions business which moves untold millions in collectibles annually. Few indeed can claim collections measured not just in tons, but tens of tons like the iconic Mastro.

So in summary – while the average collector’s holdings might fit inside a shoebox or binder, these folks exemplify taking baseball card fandom and accumulation to the absolute extreme. Whether by dint of extra cash, flat-out dedication or shrewd deal-making, titans like Cage, Peterson, Fantel, Comorosky and Mastro distinguished themselves among memorabilia aficionados everywhere by parlaying their passions into collections literally weighing tons. For better or worse, their hobbies consumed space and resources far beyond what most deem reasonably sane. But their impact on documenting baseball card history and delighting fellow collectors can’t be overstated. Legacies like these immortalize both collectors and the thriving industry they helped support.