. When I went to pick up my “snail mail” today, I noticed in the pile of letters an envelope with a particular stamp on it… !?! . At first glance, its silver color got me thinking it was an hologram stamp, but checking it out more carefully revealed it was a stamp printed on silver foil. Imagine my excitement, as you don’t get this kind of mail every day! 🙂 . . I continued on the Web my investigation about … Continue reading →