व्यावसायिक संग्रहणीय व्यापार - सभी उत्पादों की प्रामाणिकता की जाँच की जाती है
The Golden Unicorn is the first of a series of crypto stamps carrying a 1-gramm gold bar. With a face value of 500€, it is also one of the highest nominal value carrying postage stamps in the world.
