Merten 
  

I don't know much about this brand. In fact, I've never heard of them nor ever seen a picture of their picks. In any case, here it is. I wouldn't really call it a 'corrugated' pick, though it does have a grip to some degree. It looks as though someone colored the grip part with a felt-tip marker. The brand name is raised, not stamped into the pick, and it is a cream-color.

(reverse side-attempting to show 'grip' design)