Currency valuation guide: Understanding the global “Sheldon” scale (1-70)

The difference between a coin worth hundreds of dollars and one worth thousands often lies in its "grade." This comprehensive, interactive guide aims to bridge the gap between amateurs and professionals by explaining the Sheldon Global Currency Grading Scale, the standard adopted by major grading companies such as PCGS and NGC.

Through our interactive interface, you can discover the subtle differences between various coin conditions. Is your coin in UNC (Unseen) condition, exactly as it was minted? Or is it in XF (Excellent) condition with slight, barely visible wear? We show you, with pictures and detailed explanations, how to detect the original "mint shine" and how to distinguish between a naturally clean coin and one that has been chemically cleaned, which drastically affects its market value. This guide is your gateway to becoming an expert in examining and classifying your collection professionally.

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The comprehensive guide to assessing the condition of a currency

Interactive instruments · Sheldon scale · Cleaning reagent · NGC/PCGS standards

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Visual comparison between cases

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Right-hand image (basic):

Egypt 5M 1941 — UNC Egypt 5M 1941 — VF Egypt 5M 1941 — F

Left image (comparison):

Egypt 5M 1941 — UNC Egypt 5M 1941 — VF Egypt 5M 1941 — F

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right: VF Move to compare left: UNC

💡 What you see in the comparison: The left side (UNC) shows full coin luster and detail, while the right side (VF) shows flattening on high points such as the face and edges and disappearance of luster.

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A detailed explanation of the memorization levels

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MS/UNC AU almost new XF Excellent VF is very good F good VG acceptable G is weak AG/Poor

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Rapid Assessment Tool

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Answer the following questions based on your examination of the coin with the naked eye or with a 10x magnifying glass. Choose the description closest to each question and you will receive an immediate grade.

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Sheldon's Global Scale (1–70)

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MS 60

Mint State — Not traded

MS-60

P-1AG-3G-6VG-10 F-15VF-30XF-45AU-55MS-70

A completely uncirculated coin. There is no wear and tear, but it may have scratches from the mint or shipping case.

📋 View a complete reference table (all grades)

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Cleaning and tampering detector

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⚠️ Clean or altered currency is rejected by the NGC/PCGS and referred to as “Details”. 30-80% loses its value immediately. Identify the signs you see:

💡 Important reminder: This tool is for educational purposes only. For official and reliable evaluation, send your currency to [email address/contact information]. NGC or PCGS or ICG.