The apposition of the Lacrimal Bone (the smallest bone in your body) and the Maxilla (your upper jaw). This is considered to be a Harmonic suture, as each bone meets without overlapping. Also known as sutura lacrimomaxillaris, the Lacrimomaxillary suture occurs medially along the wall of the orbit (eye socket).

Sources:

Marieb, Elaine N. Human Anatomy and Physiology. Sixth Edition. Pearson
See this website for a nifty flash representation of the bones of the Skull.
http://www.upstate.edu/cdb/grossanat/hnskullantlb.shtml
Biology-Online.org