A Babe Ruth card that could set a new world record is part of a baseball card collection valued at $20 million going up for auction

A 1933 Babe Ruth Baseball Card Could Sell for More Than $5.2 Million – Robb Report

The 1952 Topps Mantle Card. Baseball in 25 Objects: nineteenth in…, by John Thorn

50 Most Valuable Baseball Cards of All Time

This Babe Ruth Baseball Card Found in a Piano Could Sell for Over $100,000 at Auction

$6.6M for baseball card? 10 most valuable of all time

Expert details Mickey Mantle baseball card selling for 'earth-shattering' $12.6 million

25 Most Valuable Baseball Cards: The All-Time Dream List - Old Sports Cards

The 20 Most Valuable Baseball Cards of All-Time // ONE37pm

SGC 7 Ruth Rookie at Heritage Auctions Could Set Record

Babe Ruth rookie card sells for record $2.46 million

MORE