USPS records 49 Black Heritage series entries from Harriet Tubman in 1978 through Phillis Wheatley in 2026. Cultural importance and market value must be evaluated separately.
Confirm series membership
Use the USPS Historian chronology and the direct issue notice when records conflict. Related Black-history subjects are not automatically Black Heritage series members.
Separate three kinds of value
Postal value is what valid unused postage pays. A seller’s asking price is only an offer. Collector value uses completed comparable sales for the same issue and condition are market evidence.
A bounded sale example
A mixed Black Heritage collection lot sold for $30 on October 19, 2024, with a 20% buyer premium disclosed. Because it included used and unused stamps, framed material, a book and a poster, it cannot establish a price for one stamp or a complete series.
Practical appraisal steps
Record issue identity, used or unused state, gum, centering, faults, provenance, sale date and fees. Obtain specialist opinions for high claimed values. Do not promise investment returns.
Sources and update note
Issue facts and current postal rules should be checked against the linked primary sources. Prices, inventory, services and policies can change.
Collector value uses completed evidence
Series membership, historical importance and age do not by themselves determine market value. Identify the exact issue and condition, then compare completed sales with dates and fees; do not substitute a seller’s asking price or an investment prediction.