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Denari Coins

The Journal

Learn the coins before you collect them.

Field guides, grading explainers, and collecting strategy for coins and bullion — written for first-time buyers and seasoned cabinet-keepers alike.

28 guides · page 1 of 3

A Roman silver denarius, the kind of ancient coin NGC Ancients grades.Featured

Grading

How NGC Grades Ancient Coins

Strike, surface, and the 1–5 star scale: what the NGC Ancients label actually tells you, and why it differs from grading modern coins.

Read the guide → 6 min

All guides

A late Roman bronze coin of the AE1–AE4 size classes.

Denominations

Reading Roman Bronze: AE1–AE4 Explained

Late Roman bronzes are sized, not denominated. Learn what Æ1 through Æ4 mean, how they map to nummi and folles, and why it matters for value.

5 min read
A bronze coin of Constantine the Great.

Dynasties & Rulers

The House of Constantine: A Collector's Primer

From Constantius I to Julian the Apostate — a one-page family tree and the coin types that make this dynasty a perfect first collection.

8 min read
A silvered antoninianus, the debased double-denarius of the 3rd century.

History

Silver to Billon: The Debasement of the Antoninianus

How a third-century currency crisis turned a silver coin into a copper one with a wash — and how to spot the difference in hand.

7 min read
A denarius of Augustus, first of the Twelve Caesars.

Collecting

Building a Twelve Caesars Set on Any Budget

The classic collecting goal, costed three ways: a budget bronze run, a mid-tier silver set, and the trophy portraits worth saving for.

9 min read
A large Byzantine bronze follis with its mark of value.

Collecting

Byzantine Folles 101

Big, bold, and affordable. An introduction to the bronze follis, regnal-year dating, and the emperors who minted them.

5 min read
A small bronze prutah of Roman Judaea.

History

Biblical & Judaean Coins: From the Widow's Mite to Masada

The most storied corner of ancient numismatics — prutot, the revolt coinage, and how to collect the period responsibly.

8 min read
A Roman gold aureus — the kind of high-value coin certification protects.

Buying & Authenticity

Authenticity & Slabbing: Why Certification Matters

What a third-party slab does (and does not) guarantee, and why certification has become the baseline for buying ancients online.

6 min read
A counterfeit ancient coin — the kind this guide teaches you to spot.

Buying & Authenticity

Spotting Fakes: A Beginner's Field Guide

Cast seams, tooled fields, and too-perfect surfaces. The red flags that separate a genuine ancient from a tourist replica.

7 min read
Coins in protective capsules and holders.

Care & Storage

Storing & Handling Ancient Coins

Bronze disease, PVC flips, and why you should never clean a patina. Practical conservation for a collection that outlives you.

5 min read
An 1880s Morgan silver dollar.

U.S. Series

Collecting Morgan Dollars: The Complete Beginner's Guide

Mint marks, VAM varieties, GSA hoard dollars, and the key dates that matter. Where to start with America's most collected silver dollar.

9 min read
A Peace silver dollar, struck 1921–1935.

U.S. Series

The Peace Dollar: America's Last Silver Dollar

High relief vs. low relief, the 1921 first year, and the modern 2021 revival. A short history of the coin that closed the silver-dollar era.

6 min read

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