Three points of interest here:
1) The actual origin of the Dutch National Grid (47.974766, 3.3135583) in the middle of a field.
2) A metal sign on a tree nearby the origin (47.97393, 3.31340)
3) The geocache itself. You can find the cache using the sign on the tree.
Convert the characters of the first word to numbers (A=1, B=2, etc) and fill these in in the coordinates below (note: * means multiply)
N 47.973[3rd * 5th] E 3.309[4th * 6th]
NOTE: On your way to the cache you might come accross some beehives. Please be carefull and do not disturb the hives. Best to stay away from them and not disturb the bees or the farmer. The hives are not on your route!