Postage Stamps
The Penny Black stamp celebrates its Birthday
The catalyst for the booming rare stamp investment market celebrates its 170th birthday today
Penny Black first day cover sells for £44,000
Once owned by Bill Gross, this example of the world's first postage stamp on cover sells at Spink
2c Black Jackson D Grill brings $4.75k
The rare stamp was the star at a Michael E Aldrich auction this week
