Hey guys. Working through this bulk lot. Had a small bag of sand green bricks, discovered 2 unique ones that have lead me to some first run HP sets which is pretty sweet... but then I found this little guy...

The part code is quite readable on the underside, it's part #30602. Thing is, I can't verify that it exists, or I'm simply looking in the wrong direction. When I check this part on both brickset and bricklink, it appears to have never occurred in any sets in the sand green colour this one has. The fact that it has printing is probably throwing me the curve ball here, I'm not sure how to search/filter for this part # but with printing. I imagine someone will recognize it or have the know-how to find it, what I'm wondering is if you'd be so kind as to explain the search steps that I've missed, rather than just handing me the set # it comes from. Cheers BP team! 

http://www.bricklink.com/catalogItemIn.asp?P=30602pb026&in=S

Only in set 4858 Doc Ock's Crime Spree!