Michael Osacky:
Your Trusted Sports Memorabilia Appraiser
Michael Osacky is an ISA-accredited, USPAP-compliant appraiser and Lead Appraiser at PSA, providing independent, formal appraisal reports for sports cards and memorabilia across all major sports.
The Journey Behind My Appraisals
The heirloom baseball signed by the Babe himself. The championship ring, heavy in your palm, engraved with a year that became emblematic in your family. Sports history gives collections value. Personal stories give them meaning.
Michael Osacky’s journey began the way many collections do, with a dusty shoebox of baseball cards passed down from his grandfather. He was drawn to the details: why one card could be worth more than another, how condition and provenance shape value, and how each piece found its way into a collection. That early curiosity grew into a lifelong passion for the hobby.
Today, Michael is an ISA-accredited, USPAP-compliant appraiser and Lead Appraiser at PSA, providing independent, formal appraisal reports grounded in research, standards, and objectivity. Every collection is approached with care — grounded in research, guided by standards, and fueled by a genuine love of the hobby.
As Seen In
A Different Kind of Appraisal Experience
The typical sports collection appraisal process is rushed, anonymous, and influenced by competing incentives. Speed and volume are priorities, and in many cases, the party assigning value is also positioned to benefit from a future transaction, compromising objectivity. Baseball in the Attic was built differently.
Michael Osacky operates as a one-person, independent practice by design. From the first conversation through the in-person evaluation and the final written report, you work directly with him. Most appraisals are conducted on site, allowing collections to be examined carefully and in context. He does not buy, sell, or consign memorabilia. The focus remains on thoughtful analysis, clear communication, and delivering grounded, defensible appraisals trusted by collectors, estates, and professionals seeking accurate sports memorabilia valuations.
Independent. Personal. Precise.
At the heart of Baseball in the Attic is its one-person approach, defined by the direct involvement, seasoned expertise, and careful attention of Michael Osacky, a USPAP-compliant appraiser for sports collectibles.
Nostalgic by nature.
Sports collectibles carry memory and meaning. Michael approaches each item with historian-level care, honoring its story and context. Nostalgia isn’t sentimentalized; it’s understood as part of the value.
Credibility that matters.
With ISA accreditation, PSA leadership experience, and decades in the hobby, Michael brings earned authority. His valuations are rigorous, defensible, and trusted by collectors, insurers, attorneys, and the IRS.
No Conflicts. No Hidden Agenda.
Baseball in the Attic appraises only — never buys or sells. With no stake in the outcome, values aren’t inflated or steered. Every appraisal is independent, objective, and grounded in research and standards.
You work directly with Michael.
From the first conversation through the final appraisal report, Michael personally handles every step. No junior appraisers, no handoffs. Just clear communication, careful evaluation, and discretion throughout.
Who We Work With
Baseball in the Attic works with people facing important decisions around sports memorabilia — from inheritance and insurance to legal matters and long-term planning.
Estate Planning & Inheritance
Appraisals for inherited or long-held collections, providing clarity before estate decisions are made.
Insurance
Coverage
Documented valuations to support insurance coverage, updated policy limits, and future claims.
Legal & Divorce Matters
Independent, well-documented appraisals prepared for asset division, litigation, or formal review.
Donation Planning
Valuations for charitable contributions, museums, or institutional gifts.
Professional
Advisors
Independent sports memorabilia appraisals supporting attorneys, fiduciaries, and financial professionals.
Athletes & Legacy Families
Discreet, objective valuation of collections tied to public legacy or personal family history.