Guglielmo Marconi's Ring

1897: Germany
Ring wore by Marconi on 13 May 1897 when he made the first ever wireless communication over open sea. It became an artifact inbued with the happiness felt by actually being able to broadcast a message through the Bristol Channel.

1999: Warehouse 13
Oliver Addams along with Artie Nielsen tracked down this artifact stopping a teenager who was using it to spy on girls. It resides in the Hermes' Wing.