Royal Key

The key was used by the Dutch King Willem Alexander to drop the curtain that hid the name "Gallery" at the opening of The Gallery at Twente University, Enschede NL at april 02 2014
Included are stl (without date) and Solid Works source files so you can add your own royal date.

http://www.rtvoost.nl/nieuws/default.aspx?nid=186575