Track your baseball card collection.

Baseball has the longest card history of any sport, and it breaks into clear eras. The pre-war tobacco era is anchored by the T206 set issued around 1909 to 1911, the most famous early issue and home of the legendary Honus Wagner card. The postwar gum era runs from the early 1950s, where 1952 Topps stands as the cornerstone modern set, through the 1960s and 1970s while Topps held a near-exclusive license. These vintage cards are scarce in high grade because they were handled, flipped, and stored without care, which is exactly why condition drives so much of their value.

Then comes the era every collector has to understand before spending a dollar. From roughly 1987 to 1994, manufacturers printed cards in such enormous quantities to meet a speculative boom that most commons and many stars from those years remain inexpensive today no matter how good they look. This is the junk-wax oversupply. A pristine 1989 or 1991 common is still a common because so many like it exist. 1989 Upper Deck helped end that period by positioning itself as a premium product, and the Ken Griffey Jr. card number one is its signature. The modern era, from the late 1990s onward, shifted the chase to rookies, refractors, numbered parallels, and autographs, where engineered scarcity rather than raw age sets the tone.

Most baseball cards of real consequence are graded, and three companies dominate. PSA is the most widely used across both vintage and modern baseball. SGC has long been a favorite for vintage and pre-war cards, where its black-insert holder and reputation for tough, consistent grading carry weight. BGS, from Beckett, is common on modern cards and is known for its subgrades for centering, corners, edges, and surface. The grade matters because the same card in a higher grade can be worth a large multiple of the same card a point or two lower, especially for vintage and key rookies.

Because grade moves value so much, record the grader and the numeric grade for every slab you own, exactly as printed on the label. Do not assert a grade a card does not carry, and do not chase a grade on a cheap, high-supply card where the grading fee can exceed any realistic value. Raw cards still belong in your records. Note condition honestly so your totals stay useful. CardGhost stores the grader and grade as fields you enter, never a guess and never a population figure.

A complete baseball entry has a set, a year, a card number, a grade or raw condition, and a cost basis, which is what you actually paid including fees. Those five things let you find the card again, compare it to others, and reason about value honestly. For modern cards, note the variant too: base, refractor, a colored parallel, a serial number if present, or whether it is an autograph or a first Bowman.

Distinguish book value from realized value. A value you enter is a book number, an educated estimate as of the date you set it. Realized value is what a card actually sold for when money changed hands. CardGhost tracks the book values you log and your cost basis, so your gain or loss is unrealized until you sell. Beware the two money traps beyond junk wax: over-grading inexpensive cards in your own records, and counterfeits of high-value vintage and key autographs, which is part of why a reputable slab matters.

CardGhost organizes your MLB cards by set and by grade so the shape of the collection is visible at a glance. You can see how much of your value sits in vintage Topps versus modern Bowman Chrome, how your PSA 10s compare to your PSA 9s and raw cards, and which cards carry the most weight in the total. Everything is sorted from the fields you enter, not pulled from a marketplace.

From there you watch it move. Update a card's value whenever you want and CardGhost records how the total shifts across weeks and months, always framed as of the dates you logged. It adds up your cost basis against your current entered values and shows unrealized gain or loss, broken out by category and by grade, and keeps it private to your account.