Michael S Osacky, ISA AM



Michael S Osacky
ISA member since Oct 02, 2017

(312) 379-9090 (Office)

Address #1

Chicago, IL 60610 map

Address #2

New York, NY 10019 map

Send an email


In 2017, Forbes Magazine named Michael the "Dean of Cracker Jack Baseball Cards."  

Legendary newsman Rick Kogan of the Chicago Tribune said Michael is one of the "Most Interesting People in Chicago."

Michael is the President of Baseball In the Attic.  The company appraises vintage sports card and memorabilia collections for private individuals, museums, historical societies, and auction houses.  

Michael is the Lead Appraiser for Professional Sports Authenticator. (PSA)  Michael appraises all sports cards, autographs, ticket stubs, and photos for PSA's customers.

Michael has worked with former professional players' and their families.  (Chicago Bulls & New York Yankees)

Michael is a frequent speaker on the hobby and is represented by Premiere Speakers Bureau.

In the past several years, Michael has been featured on several TV, Radio, and Newspapers across the country.

(Forbes Magazine, Chicago Tribune, Parade Magazine, ESPN Radio, Kiplinger Magazine, Kovel's Antique Magazine, CBS, NBC, ABC, Fox and WGN TV/Radio.

Michael splits his time between Chicago and New York.


  • Collectibles - Sports & Trading
  • Memorabilia


  • Appraisal Review
  • Consultant
  • Estate Evaluations
  • Investment Evaluation
  • Speaker

Performs Appraisals Of

  • Auction Company/Gallery
  • Business Contents/Inventories
  • Collectibles - Sports & Trading
  • Documents - Autographs
  • Memorabilia - Advertising Items