Four Seasons Geocoin - Black nickel Four Seasons Geocoin - Black nickel £13.99 £7.00 Quantity: at £7.00 each Add To Basket Four Seasons Geocoin - Black nickel. The art for this coin represents geocaching for all seasons all around the world. It is a big 2" square coin and trackable. Measures 2" square. Hard enamel colors. Trackable on Geocaching.com. An icon unique to this coin will show on your profile when you log a discovery.