Capsules within coins.

Capsules within coins.
The small portions of meteorite that is encapsuled in the centre of the coin were from the "Campo del Cielo", a meteorite shower that fell to Earth around 4000 years ago in Argentina. They were frozen in liquid nitrogen and then broken into small pieces for inserting into the capsule.
[Text taken from presentation boards.]
- 2013 Sep 08 12:02:17