These came from a nest laid 9/18/11. I left the eggs in the ground over winter (and spring), dug them up on 6/9/12 and finished incubating them indoors. 7 eggs total. 3 hatched, 1 hatching, 2 will hatch any day, and 1 doesn't look fertile.
I really like how each one is unique. The one on the right would be my favorite here with the flaring all around its shell.