THE COINPROFESSOR JOURNAL
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Practical guides to physical coin identification, visible condition and the limits of photo grading.
Read the Reasons Behind a Coin’s Photo Grade Range
Learn how to interpret a preliminary coin grade range, test its assumptions, and understand what an in-hand professional grading review adds.
Read the guide →Make a Matched Photo Pair for a More Useful Coin Review
Learn a repeatable setup for photographing both sides of a coin, keeping scale, focus and orientation consistent for a useful preliminary review.
Read the guide →A Coin-Photo Checklist That Teaches You What to Trust
Learn how to check coin photos for usable evidence, separate observations from guesses, and choose the right next step for a preliminary review.
Read the guide →Identify First, Grade Second: Keep Two Separate Coin Conclusions
Learn a two-pass method for separating coin identification evidence from a preliminary grading opinion, with practical notes and clear limits.
Read the guide →Document a Coin’s Edge Without Putting It at Risk
Learn a low-risk method for recording a coin’s edge, organizing overlapping photos, and separating visible details from questions that need in-hand review.
Read the guide →From Market Range to Sale Price: Check the Assumptions First
Learn why a preliminary coin market range differs from a sale price, how to check comparable sales, and which costs can change what a seller receives.
Read the guide →Similar Coins, Different Grades: A Side-by-Side Comparison Method
Compare similar coins with an evidence-first checklist that separates wear, strike, luster, and marks without assuming matching designs mean matching grades.
Read the guide →When a Coin Needs In-Hand Authentication: A Practical Triage Guide
Learn which physical coin questions require in-hand authentication, what photos cannot settle, and how to prepare a useful examination request.
Read the guide →Organizing Inherited Coins: Build a Record That Keeps the Evidence Together
Learn what to record for inherited coins, from holder notes and matching photos to uncertain identifications, so each next review starts with evidence.
Read the guide →Move the Light, Not the Verdict: A Coin Photo Lighting Test
Learn how lighting changes the appearance of coin marks, color, and luster—and use a simple comparison test to avoid overreading a single photo.
Read the guide →Is It Wear or Just Weak Detail? Read the Evidence on Your Coin
Learn to distinguish visible coin wear from weak strike, lighting, and other uncertainties with a practical observation checklist before assigning a grade.
Read the guide →Record What You See: A Coin Date and Mint Mark Checklist
Learn how to record a coin’s date and mint mark, label uncertain details, and build a reliable research note before identifying its issue or checking references.
Read the guide →A Photo Grade Is a Starting Point, Not a Certified Result
Learn how to interpret a preliminary coin grade range, separate visible evidence from uncertainty, and decide when an in-hand review is warranted.
Read the guide →Photograph Both Sides of a Coin Without Hiding the Evidence
Learn how to photograph a coin’s obverse and reverse with clear lighting, consistent framing, and enough detail for a useful preliminary photo review.
Read the guide →