“Proof ka ba? Inde Matte!” If you’re confused by the terms Proof, Matte, and BU when buying or collecting Philippine commemorative coins, you’re not alone. In this guide, I share what I’ve learned — from shiny mirrors to jelly-like reflections — on how to tell these finishes apart using practical tests and ABL coin examples. Whether you’re new to collecting or just curious, this blog will help you confidently spot the difference.
