Jim Konstanty Autographs
Jim Konstanty was born on March 2, 1917, in Strykersville, New York. He is known as a former professional baseball pitcher for the Philadelphia Phillies from 1948 to 1954. Jim was a right-handed pitcher who made his major league debut on April 17, 1944, for the Cincinnati Reds. However, it wasn't until he joined the Phillies in 1948 that he had his breakthrough year.
In 1950, Jim Konstanty had one of the greatest seasons a relief pitcher has ever had in Major League Baseball history. He pitched in 152 innings, winning 16 games, saving 22, and finishing with a 2.66 ERA. He even won the National League MVP award that season, becoming the first relief pitcher ever to do so. As a consequence of Jim's contributions, the Phillies won the National League pennant in 1950, but lost to the New York Yankees in the World Series.
Jim Konstanty played for many teams in his career, including the Boston Red Sox, New York Yankees, Cincinnati Reds, and St. Louis Cardinals. In total, he played 11 seasons in the big leagues and retired in 1956 with a 66-48 record, 74 saves, and a 3.46 ERA. Jim's contributions to baseball do not end there, as he taught the art of pitching after his playing career was over. His legacy in baseball is still felt today, and his remarkable 1950 season remains one of the greatest feats ever done by a relief pitcher.
Read more about Jim Konstanty on Wikipedia
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Traded items with a signature of Jim Konstanty
The most expensive item with a signature of Jim Konstanty (Circa 1950 Jim Konstanty Single Signed ONL Baseball 1950 NL MVP PSA LOA) was sold in March 2026 for $7,500.00 while the cheapest item (JIM KONSTANTY SIGNED CUT INDEX CARD w/ GAI COA) found a new owner for $1.25 in December 2008. The month with the most items sold (5) was March 2011 with an average selling price of $22.26 for an autographed item of Jim Konstanty. Sold items reached their highest average selling price in March 2026 with $7,500.00 and the month that saw the lowest prices with $3.26 was January 2018. In average, an autographed item from Jim Konstanty is worth $31.00.
Most recently, these items with a signature of Jim Konstanty were sold on eBay - click here for more items.
| Picture | Item Title | Price | Store |
 | 1947-66 Exhibit Supply Co -JIM KONSTANTY (Phillies) *AUTOGRAPHED* d.1976 *RARE* | $203.98 |  |
| 1951 Bowman Jim Konstanty Phillies autographed Baseball Card | $52.00 | |
 | 1955 Bowman Baseball Signed #231 Jim Konstanty Auto | $120.25 | |
 | Circa 1950 Jim Konstanty Single Signed ONL Baseball 1950 NL MVP PSA LOA | $7,500.00 | |
 | Jim Konstanty 1951 Signed Psa/dna Cert Gpc Govt Pc Authentic Autograph | $78.93 | |
| Jim Konstanty Autographed Cut JSA COA Tough Signature Philadelphia Phillies! | $39.00 | |
 | Jim Konstanty Beckett BAS Signed 3x5 Index Card Autograph | $82.25 | |
| Jim Konstanty Beckett BAS Signed 3x5 Index Card Autograph | $77.25 | |
| Jim Konstanty Beckett BAS Vintage Signed 1952 Topps Autograph | $194.75 | |
| Jim Konstanty Gem Mint 10 Beckett BAS Signed 1947-66 Exhibits Rookie Autograph | $143.75 | |
| Jim Konstanty PSA DNA Signed 1969 First Day Cover Cache FDC Autograph | $79.95 | |
| Jim Konstanty PSA DNA Signed 1969 First Day Cover Cache FDC Autograph | $79.75 | |
| Jim Konstanty Signed Postcard | $17.05 | |
| Jim Konstanty Signed Psa/dna 1951 Postmarked Gpc Autograph | $98.40 | |
| MLB pitcher Jim Konstanty signed photo postcard in St. Louis Cardinals uniform | $19.50 | |
Jim Konstanty signed Baseball Trading Cards by Manufacturer
