This is a puzzle cache. The cache is NOT at the posted coordinates.
This geo-puzzle cache is part of a series of easy puzzles. The series is intended to get cachers involved that don't do geo-puzzles. Since non-puzzlers usually do not include puzzles in their PQs, it would be appreciated if the puzzlers out there would spread the word.
Letters or numbers? Well, the final coordinates are both. This is an old geo-puzzle trick. Usually the coords are hidden someplace, making the puzzle much harder to solve. But, for this easy puzzle they are right out in the open below. You will have to use your noodle, as the solution is method is not given. But steam won't come out your ears as the mental effort is minimal.
dg dj.jji abb jd.jfi