MYKOYNS
Philippine Numismatics

A practical guide to collecting Charles and Johanna coinage in the Philippines (1565–1572), including key features, denominations, and identification details for early Spanish colonial silver coins.

Cleaning coins is widely discouraged in numismatics, but cleaned coins still appear in many collections. Learn how cleaning affects value and why some collectors still choose to collect them.

Learn about stamped and marked coins—counterstamped, countermarked, and chopmarked coins used in the Philippines. Discover how these marks validated foreign coins in circulation and why they remain important to collectors of Philippine currency.

Explore Spanish-Philippine decimal coins and learn how to collect colonial Philippine coinage. This guide covers the Manila Mint, major coin series, denominations, and challenges collectors encounter.

When I added a beautiful 1893 Japanese 1 Yen silver coin to my collection, I had no idea how to read the date! Japan uses a fascinating dating system based on its emperors, and in this post, I’ll show you exactly how I deciphered it—from recognizing the Era to translating Japanese numerals.

Learn the differences between Proof, Matte, and Brilliant Uncirculated (BU) Philippine commemorative coins. Understand their finishes, characteristics, and how to identify each type.