Instructions
Make sure you are looking at the back of the card. Most of the time this is as simple as looking at the side without the player's photograph but occasionally--as with checklist cards--this is not the case. The card number is always located on the back of the card, usually at one of the top corners.
Examine the number on the back of the card. Generally the number is between one and a few hundred (sometimes greater than 600). Special cards are marked by letters. Exactly what these letters mean differs from set to set but they usually designate the card as a part of a special subset.
Find the year the card was made. This is usually found in small print near the bottom of the card. If you cannot find a date, you may be able to figure it out by looking at the last statistical year represented on the card and assuming the card was printed during the following year. This method is not foolproof, however.
Read the information. The information on the back of a baseball card can be written in a number of ways, including paragraph format and a bulleted list. This information is generally about a player's on-field accomplishments but sometimes a card has personal information. The player's height and weight are often listed here as well.
Look at the statistics. The year is usually the first number on the left followed by the team the player played for. Sometimes the statistics are abbreviated. The most common batting abbreviations are G (games played), AB (at bats), R (runs), H (hits), 2B (doubles), 3B (triples), HR (home runs), RBI (runs batted in) and SB (stolen bases). Common pitching statistics are abbreviated ERA (earned run average), IP (innings pitched, H (hits allowed), ER (earned runs), BB (base on balls), SO or K (strike out), S (saves), W (wins) and L (losses).