The cache IS at the posted coords. To log a “Found It” for this cache, in addition to finding the cache and signing the logbook you must have:Found 250 Mystery Caches. Use the provided checker and post the results in your log. Congrats to NeverSeenGene for FTF.
If the container is missing or the log is wet or full feel free to replace. 
[Scouter James 1948](https://www.geocaching.com/profile/?u=Scouter%20James%201948) has used [Project-GC](https://project-gc.com/Challenges/GC83C3Z/40399 "Project-GC Challenge Checker") to see if they qualified for this challenge and they did.