There is no cache at the published coordinates. To find this cache, complete the Adventure Lab titled "New Sheffield", which begins at the published coordinates for this cache. Once you have completed the Adventure Lab successfully, you will be provided with coordinates to find and sign the logbook for this bonus Mystery cache. As you complete the Adventure Lab you will pass near several related caches which you may decide to find as well. Good luck!
Read the Adventure Labs FAQ for more info on how to play them.
For those who use GSAK, I have made a GPX file of this Adventure Lab so you can update your stats.
Congrats to Muppet95 for being FTF of the Adventure Lab and this bonus cache!