1970 Topps #678 Dave Duncan
About Dave Duncan
Duncan's 1969 with Oakland was a .126 season over 58 games, with 3 home runs and 22 RBI, and Phil Roof took over as the main catcher. His card #678 is in the seventh series, the high numbers. In 1970 he hit a career-best .259 with 10 home runs and 29 RBI, then criticized owner Charlie Finley, and manager John McNamara was fired that October.
David Edwin Duncan, born September 26, 1945 in Dallas, Texas, was a catcher who played 11 major league seasons for the Kansas City/Oakland Athletics, Cleveland Indians, and Baltimore Orioles from 1964 to 1976. Signed by the Athletics out of San Diego's Crawford High School, he debuted in 1964 as an 18-year-old, then developed through the minors alongside future stars Rick Monday and Reggie Jackson. Duncan became Oakland's primary catcher in the early 1970s, earning a selection to the 1971 American League All-Star team and helping the Athletics win the American League West in both 1971 and 1972, then the 1972 World Series championship. Known more for his defense and game-calling than his bat, he finished his career with a .214 batting average, 109 home runs, and 341 RBIs over 929 games. After retiring as a player in 1977, Duncan built a long second career as a pitching coach, spending three decades alongside manager Tony La Russa with the White Sox, Athletics, and Cardinals.
Sources: Wikipedia · SABR BioProject · Baseball-Reference · BaseballCardPedia
Graded population (PSA & SGC)
| Grader | Total | 10 | 9 | 8 | 7 | 6 | 5 | 1-4 | Auth |
|---|---|---|---|---|---|---|---|---|---|
| PSA | 248 | 8 | 62 | 143 | 20 | 12 | 3 | 0 | 0 |
| SGC | 5 | 0 | 2 | 1 | 2 | 0 | 0 | 0 | 0 |
Graded population — a scarcity guide, not a price. Data as of 2026-10-19. Half grades fold down for both graders (8.5→8); PSA qualified slabs (OC, ST, PD, MC and the like) are not counted.
Find this card
Search T206 Cards Shop 1970 Topps cards Live auctions Buy It Now on eBay Sold prices
As an eBay Partner Network affiliate, T206Cards.com may earn from qualifying purchases.
Related cards
Team card: #631 Oakland Athletics
More Oakland Athletics cards:
- #21 Athletics 1970 Rookie Stars
- #41 George Lauzerique
- #55 John Odom
- #64 1969 American League RBI Leaders
- #66 1969 American League Home Run Leaders
- #102 Joe Rudi
- #120 Sal Bando
- #140 Reggie Jackson
- #205 Bert Campaneris
- #233 Lew Krausse
- #259 Tommie Reynolds
- #287 Fred Talbot
- #311 Dick Green
- #331 Chuck Dobson
Frequently asked questions
What is the 1970 Topps #678 card?
It is card #678 of the 720-card 1970 Topps Baseball set, picturing Dave Duncan of the Oakland Athletics.
Why is #678 harder to find?
It is a high number card from the seventh and last series, #634-720 - the high numbers, and the toughest series of the set to find.
How many cards are in the 1970 Topps Baseball set?
720 cards, tracked as 726 collectible states. Numbers run from 1 to 720 with none skipped, issued in seven series - #1-132, #133-263, #264-372, #373-459, #460-546, #547-633 and the high numbers, #634-720; 6 cards, all of them checklists, carry catalogued print variations that the master set counts separately.
Sources: Trading Card Database, PSA CardFacts, BaseballCardPedia, Cardboard Connection, Baseball Almanac, Baseball-Reference, the SABR BioProject and the National Baseball Hall of Fame, PSA & SGC population reports. Card data compiled and maintained by T206Cards.com. Page last updated 2026-10-25.