Postal Key

This key was created in commemoration of Guglielmo Marconi's 125th birthday in 1999. It is a faithful replica of a Swiss postal key that can be seen on Albert Einstein's desk at the Patent Office in Zurich in this old photo from 1901. The original design dates back to 1861 - but our leisure time uses contemporary techniques that make this antique probably more fun to use than the original ever was.
The base is very heavy (about 3.5 pounds) cast iron, and all other parts are made of gold-plated brass, and the contacts are 925/000 silver.