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Mickey Mouse Money: The Story of Japanese Invasion Notes in the Philippines
During WWII, Japan issued its own currency in the Philippines—called Japanese Invasion Money. Nicknamed “Mickey Mouse Money,” these notes quickly lost value due to overprinting, lack of trust, and Allied counterfeiting. But behind these worthless bills lies a fascinating story of economic manipulation and wartime survival.

My Koyns
Oct 23, 20244 min read


Mule Coins of the Philippines: Rare Errors with a Twist of History
What do you get when a coin is struck using mismatched dies? In numismatics, it’s called a mule—and in the Philippines, there are three fascinating examples. From the rare 1918-S 5C to the recently recognized 1944-S 50C, this post dives into their stories, how to spot them, and why collectors find them irresistible.

My Koyns
Sep 19, 20243 min read


Celebrating 75 Years: BSP Releases 750-Piso Silver Commemorative Coin
The Bangko Sentral ng Pilipinas has released its latest commemorative coin—a 750-piso silver piece celebrating the bank’s 75th anniversary. This marks BSP’s third major commemorative issue, following releases in 1999 and 2019. The release was highly anticipated, though not without hiccups on the BSP Store website.

My Koyns
Sep 3, 20242 min read


The Y2K of Coins: The Scarce and Collectible 2000 10 Piso Millennium Coin
While the world braced for the Y2K bug in 2000, the Philippines quietly launched its first bimetallic coin—the 10 Piso Millennium Coin. Once a circulating coin, it has now become a prized collector’s item with growing market value and historical significance.

My Koyns
Jun 26, 20243 min read


Numismatic Show: A Journey into the World of Coins and Collectors
Last April 2024, I attended my very first numismatic show—and it was more than just coins on tables. It was a community, a classroom, and a marketplace all rolled into one. Here's what I saw, learned, and why I think every collector should experience it at least once.

My Koyns
Apr 28, 20243 min read


Commemorating the Hero of Mactan: Lapulapu in Philippine Numismatics
Lapulapu, the legendary Datu of Mactan who defeated Magellan in 1521, is a symbol of Filipino resistance. But did you know he appeared only a few times in Philippine coinage? From a humble 1 centavo coin to the highly coveted 2021 5000 Piso commemorative medal, Lapulapu's presence in numismatics is both rare and significant. Discover the medals and coins that celebrate the hero of Mactan and how collectors value them today.

My Koyns
Nov 9, 20234 min read


Commemorating in Silver: The Philippine One Peso Coins After WWII
After WWII, silver coins gradually disappeared from daily circulation, but the Philippines continued to issue special silver One Peso coins to commemorate key historical events and figures. From General MacArthur’s Leyte Landing to Jose Rizal’s centennial, these coins are more than just legal tender—they’re miniature monuments of memory.

My Koyns
Aug 31, 20232 min read


The 10 Centavos Coin: A 160-Year Journey Through Philippine History
Did you know the 10 Centavos coin is the longest-running denomination in Philippine coinage history? From its silver debut in 1864 to its final appearance in 2017, this humble coin witnessed centuries of change—from Spanish colonization, American occupation, and Commonwealth rule to full independence and modern-day Philippines. Explore its evolution through history, design, and materials—and discover how a small coin made a lasting impact on a nation’s currency.

My Koyns
Jul 11, 20235 min read
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