Graded & Certified Stamps
Graded & Certified Stamps
Certified and graded U.S. stamps from recognized expertizing services, including PSE, the Philatelic Foundation, and PSAG when applicable.
Confidence through certification
For many better U.S. stamps, expert certification can provide added confidence regarding identity, genuineness, condition, and—in graded cases—centering and overall grade.
Maine Stamp Shoppe regularly offers material accompanied by certificates from services such as Professional Stamp Experts (PSE), the Philatelic Foundation (PF), and Professional Stamp Authentication and Grading (PSAG).
How we describe certified stamps
Our listings identify the certifying service and grade when one is assigned. We also describe gum condition, hinging, cancellation, and other characteristics important to collectors rather than relying on a grade alone.