To get an idea of what these sketched-in editions generally look like check out:
The 2011 Sketches
The 2012 Sketches
May the fastest refresher win!
One final note: I will be shipping these AFTER I return from Spectrum Live! So please give me a little extra time to ship these before setting up any artillery batteries.
Some images from the new edition of Sketchbook 2010: The Silver Age: