1978 was a transitional year for baseball cards as the hobby began moving from the traditional cardboard to the more modern plastic packaging we see today. Some of the major sets from 1978 include Topps, Donruss, Fleer, and Score. Let’s take a deeper look at each set and how the values of cards from that year have fluctuated over time.

Topps remained the dominant baseball card company in 1978 and produced their standard design featuring individual player photos on a white background. The set totaled 792 cards including regular issues, manager/coach cards, and multi-player cards. Some of the top rookies included Don Mattingly, Bob Horner, and Jack Clark. Graded gem mint 10 examples of these rookies can fetch over $1000 each today.

The biggest stars of the day like Reggie Jackson, Pete Rose, and Nolan Ryan have high grade common cards selling in the $20-50 range. The true stars of the set are the short printed cards after #700. The Mickey Mantle returning from retirement card #770 has sold for over $5000 in mint condition. The final card #792, featuring a checklist on the front and career stats on the back is also very valuable graded and sells for hundreds in high grades. A complete 1978 Topps set in played condition can be acquired for $300-500 depending on the quality.

Donruss also produced their first baseball card set in 1978 after previously focusing on other sports. The design was very basic with a color team logo in the foreground and black and white player photos on a gray backdrop. The set totals 514 cards including managers and coaches. While not as iconic as Topps, the Donruss rookie cards of Mattingly, Horner, and Clark still command $100-300 each in high grades.

Complete sets are more affordable than Topps at $150-250 in played condition. The true key cards in the set are the short printed high numbers after #500 which feature star players like Nolan Ryan and Carlton Fisk. These scarce sp cards can reach $1000+ for the true key numbers. The 1978 Donruss set is an affordable vintage set that provides a different aesthetic compared to the traditional Topps design.

Fleer also joined the annual baseball card race in 1978 with their first ever issued set. Known for innovative plastic packaging, Fleer cards had a colorful design with action photos and team logos at the bottom. The set totals 402 cards and is notable for being the first to feature player autographs on the front of some cards, a concept that became very popular.

The autograph cards are among the true keys to the set including a Dave Parker signed card that has sold for over $5000. Other stars like Ryan, Rose, and Fisk have high grade common cards in the $20-50 range. Complete 1978 Fleer sets in played condition sell for $200-350 depending on quality and number of autograph cards included. It remains one of the more aesthetically pleasing vintage sets due to the colorful photography and packaging.

Score also debuted their first baseball card set in 1978 with a design similar to Donruss featuring black and white player photos on a gray background with team logos. The set totals 330 cards including managers and coaches. While not as iconic as the other ’78 releases, it provides another affordable vintage option for collectors.

Complete Score sets can be acquired for under $100 played. The true keys are the #1 Nolan Ryan card and high numbers after #300 which feature stars. These scarcer cards can reach $100+ in top grades. Overall, 1978 Score provides a budget-friendly way to collect cards from that era in a basic yet classic design.

In summary, 1978 was a transitional year that saw the rise of new competitors like Donruss, Fleer and Score join Topps in the annual baseball card race. Sets from that year have remained popular due to featuring the careers of future Hall of Famers and stars of the late 70s. While not as valuable as the iconic 1952 Topps or 1969 Topps sets of that era, 1978 cards provide an affordable entry point into the vintage hobby. With the continued interest in players like Mattingly, prices are likely to remain steady or potentially increase over the long run.