Instructions
Get your memorabilia authenticated to determine its real value and to ensure you receive top dollar for it when it comes time to sell. You'll find a host of online professional authenticators that specialize in sports memorabilia, such as Professional Sports Authenticators. An authentication service can also give you a value amount or range for your baseball memorabilia.
Shop around, both online and in sports card or memorabilia shops in your area, to find items similar to yours and learn the going rates. Internet retailers that specialize in sports merchandise and memorabilia, and auction sites such as eBay.com, are good places to start online.
Pick up a baseball card and memorabilia price guide. You'll find guides, such as the Beckett Price Guide, in book stores and online.
Seek out sports collectors in your area to request their opinions on the value of specific items.
Check out sports card shows in your area to see what other collectors are asking for their items. Although these events will typically be billed as "sports card shows," they frequently include vendors who are selling a wide range of sports merchandise, including baseball memorabilia.