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Philippine Numismatics
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Investigating the Origins of Grooved Philippine Coins
Explore the unusual origins of grooved Philippine coins and the question of whether they are mint errors, post-mint damage, scrap markings, or undocumented numismatic pieces.

MyKoyns
Jun 44 min read


How to Detect Counterfeit Philippine Coins
Learn how to detect counterfeit Philippine coins using key authentication methods, including specifications, visual inspection, and basic tests.

MyKoyns
May 182 min read


Problem Coins in Philippine Numismatics: What Damage Can Reveal About History
Learn how holed, cleaned, and damaged coins reveal real-world use and history. Explore problem coins in Philippine numismatics and how collectors interpret them.

MyKoyns
May 177 min read


History of Philippine Money
A quick look at the historical development of Philippine money across political transitions and economic reforms.

MyKoyns
May 172 min read


A Quick Dive into the History of Money
Discover the quick history of money, from barter systems and early coinage to paper money and modern monetary systems.

MyKoyns
May 172 min read


How to Read Philippine Coin Details: Dates, Mint Marks, and Variations
Learn how to read Philippine coin details such as dates, mint marks, legends, and varieties across major series. A practical guide for collectors building stronger identification skills.

MyKoyns
May 173 min read


Varieties in Philippine Republic Banknotes: Beyond Denominations
Discover the varieties found in Philippine Republic banknotes, including signature combinations, printers, serial numbers, specimen notes, and error notes.

MyKoyns
May 164 min read


Collecting U.S.-Philippine Coins (USPI)
Learn about U.S.–Philippine coinage (1903–1946), including designs, mint marks, varieties, proof issues, and key rarities in this collector’s guide to USPI coins.

MyKoyns
May 135 min read
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