codes

Help to find the treasure woth the codes and signs on the rock... This rock is between 2 other big rocks.. Right part of rock Left part of rock Above

So I'm hoping some of you are better at this than I am, because I'm stumped! I found part of the bottom of a round green bottle with some letters and numbers and wanted to see if I could date it based on that. It's the upper right corner of the bottom so it says [cut off section] 861 and under...

Now I know what most of you are going to say, and I cannot wait to hear from each and every one of you.