Arthur & Trillian (A.Bronze)
Arthur & Trillian are a geocaching couple from central Missouri with a great sense of humour. Their personal geocoin honours Douglas Adams' Hitchhiker's Guide to the Galaxy series (as does their choice of geocaching names).
The geocoin was released in summer 2007 in five flavours: Polished gold, antique silver, antique bronze, LE antique copper (50 minted), and XLE satin gold (10 minted). The first three were sold, the latter two were trade-only.
By the way, the answer to life, the universe, and everything is indeed on the front of this coin. Can you find it?