The one I have is similar to this ... a four piece, and with a magnetic top, it's really nice.
Mini Space Case Quality 4 Piece Herp Pollen Grinder Mag - eBay (item 140223365003 end time Apr-12-08 19:56:27 PDT)




But they do make a 3 piece (or 2 piece) ones which are laid out similar to this. Is your's a 3 piece?

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