So, we ve got plain-Jane, or rather plain-Elizabeth, stamps in lots of colors. What s the big deal?
The big deal is that over the years, advances in technology as well as changing postal rates have led to a constant stream of new varieties. Nearly every philatelic property has changed at least once – paper, gum, luminescence, printer, printing method, perforation gauge, and so on. A moderately comprehensive collection of Machins is a lesson in nearly every aspect of modern philately. The exception is the watermark – no Machin has carried a watermark.
