Baseball cards produced before 1980 are of great value due to their limited availability. Baseball cards, like comics and other collectibles, are valued for what they are and what state they are in. Previous reviews, for example, are for “near perfect” cards, which means minimal wear and tear. Values drop as conditions drop to excellent, very good and good.
Edges: Clean and nice edges go a long way to make the card attractive. Sometimes you'll see old cards that were badly cut and don't have clean, nice edges. Professional evaluators (and collectors) will make exceptions for cards with known cutting problems. But when possible, you'll want to see the edges free of chips and nicks.
Jeter was a 14-time All-Star and always seemed to play his best baseball in the most clutch points on the biggest stage. During those years I also got a good number of past cards from older family members, my friends' older siblings, etc. I just cleaned my basement %26 like I do every time, when I get to my baseball card collection I stop and stare. Although the item is based on baseball cards, the same applies to soccer cards, which I collect.
A few years ago I received several boxes full of baseball, basketball, soccer and hockey cards from the early 90s. My first box, the 1990 Pro Set Series II football, had some interesting things for the time (Emmitt Smith RC, etc.), but nothing worth even trying to sell now. You might have a similar story, with boxes of cards stored in some closet or warehouse that you haven't seen in years. If you have unsorted versions of any of the cards in this list, it's important to remember that you must qualify them so that they have a chance to be worth something similar to the price at which those cards were sold.
But as the author said, sometimes having cards just for aesthetic value or just to say, “Yes, I have a handful of Philly from '64, that's enough. I wrote a guide to the best card sleeves and holders to use in your collection, so be sure to check it out. Still, the truth is that many baseball cards are still highly desirable, and they sell for real money (or PayPal dollars or BitCoin or whatever digital currency you choose). I started collecting base cards on them and found Babe RUTH, MICKEY MANTEL, DOC MEDIÇH, PETE ROSE. So, you should double and triple check to make sure you don't have an error card that could be worth a lot of money.
That's due to the fact that it's simply not worth having a qualifying card that doesn't return at least a PSA 8.