Uploaded March 2026 | Updated September 2026, 2 hours ago
Eric Mandelkern embraces the “hustle in the hobby.” The born-and-bred New Yorker lives it. Breathes it. Loves it. That affinity for the grind has helped him build arguably the greatest modern Bowman rookie collection on the planet. And though this lifelong collector’s goals now trend toward the economic, blurring the lines between collecting and investing, Mandelkern’s prospecting process also influences how he follows the sport he’s loved since he was a kid. See how one of today’s premier baseball collectors pinpoints who to target and what makes investing in baseball cards worth it for him.
Eric Mandelkern embraces the “hustle in the hobby.” The born-and-bred New Yorker lives it. Breathes it. Loves it. That affinity for the grind has helped him build arguably the greatest modern Bowman rookie collection on the planet. And though this lifelong collector’s goals now trend toward the economic, blurring the lines between collecting and investing, Mandelkern’s prospecting process also influences how he follows the sport he’s loved since he was a kid. See how one of today’s premier baseball collectors pinpoints who to target and what makes investing in baseball cards worth it for him.
