The 1991 Fleer baseball card set is considered one of the more valuable issues from the early 1990s. Fleer produced cards from 1986-1994 until losing the MLB license to competitor Upper Deck. The 1991 set in particular featured stars like Barry Bonds, Nolan Ryan, and Cal Ripken Jr. capturing some of their best seasons.

While individual card values vary greatly depending on player, condition, and hobby demand – there are some general tips on what 1991 Fleer cards may be worth today. Firstly, the condition and grade of the card is extremely important. Similar to other collectibles, near mint or higher graded cards in the 7-10 range on the 10 point Beckett/PSA scale will hold much greater value. Well-worn or damaged cards may have only minimal worth outside of sentimental value.

Common ungraded rookie or star player cards in near mint to mint condition often sell in the $5-25 range online. True gem mint 10 graded rookie cards for future Hall of Famers could reach hundreds or even thousands depending on the player. For example, a PSA 10 graded Ken Griffey Jr. rookie from 1991 Fleer sold for over $2,000 recently. Other top rookies like Chipper Jones and Jim Thome in a PSA 10 could reach $150-400.

Superstar veterans at the peaks of their careers like Barry Bonds also have desirable 1991 Fleer cards. A PSA 9 graded Bonds is valued around $75-150 depending on recent eBay sales. Nolan Ryan and Cal Ripken Jr. PSA 9s also sell regularly for $50-100. Lesser star players in top grades may hold values of $20-50. Even role players or backups can have $5-15 cards in PSA 9-10 condition for completists.

Beyond individual stars, the 1991 Fleer set also contains several valuable short prints and error cards. The Derek Jeter short print rookie is one of the most iconic from the entire 1990s. A PSA 10 graded example recently sold at auction for over $30,000, while a 9 can reach $5,000-10,000. Another short print of Gregg Jefferies also regularly sells for $250-500 in top grades.

One infamous error card is the Orlando Merced “No Name” card, which inexplicably left off his last name on the front. High graded examples often surpass $1,000 due to the legendary mistake. Continuing cards like these in pristine condition maintain a strong collector demand decades later.

In addition, 1991 Fleer had an unusually high number of serially numbered parallel subsets that added to the complexity. The Emerald parallel was limited to only 12,000 sets and subsets featuring Jack Morris, Kirby Puckett and Cal Ripken Jr have become quite valuable in higher grades. Often selling in the $75-150 range for stars in PSA 9-10 conditions.

When fully graded and encapsulated, complete sets also carry substantial values. A PSA 9 graded 1991 Fleer baseball set recently auctioned for over $5,000. While a true perfect PSA 10 graded set in Gem Mint condition could theoretically reach $15,000-$25,000 or more today from eager collectors. With only 500+ total cards across stars, rookies and parallels – completing the entire rainbow variation of the set presents an immense challenge.

While 1991 Fleer baseball cards vary widely in individual worth – grades, stars, errors and parallels add tremendous value potential for condition sensitive investors and set builders. Common cards remain affordable enjoyment for many fans too. But upper echelon gems preserved in pristine quality could emerge as prized trophies for devoted collectors for generations to come. Preserving the excellent condition of any treasured 1991 Fleer cards remains the best approach to retaining and potentially gaining future worth.