A 1964 American League Most Valuable Player award presented to baseball star Brooks Robinson could make in excess of $100,000.
Robinson hit a hugely impressive 118 runs over the season, combining a .317 batting average with a .972 fielding percentage.
Heritage explains: "Though Mickey Mantle and the New York Yankees would claim the American League flag this year, the Commerce Comet managed only two first-place votes in Most Valuable Player balloting to Robinson's eighteen, directing the glorious hardware proudly presented here to the hero of Baltimore.
"Robinson would earn ten top-twenty finishes in MVP voting during his Hall of Fame career, but this represents his sole victory, arguably the most significant relic from The Brooks Robinson Collection."
Hockey star Bobby Orr's 1975 final game jersey for the Boston Bruins is also expected to make more than $100,000.
Orr only played 10 seasons before a recurrent knee injury forced him into retirement at the age of 30.
Heritage comments: "That all-too-brief era of dominance has left the collectibles hobby in woefully short supply of game worn jerseys from Orr.
"Here we present one of the most important to survive to present day, the very last worn in representation of the team he twice led to Stanley Cup glory.
"It's a fitting bookend to the rookie model that Heritage sold for a record $191,200 in April 2010."
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