Good thing I snapped some photos prior to etching... not sure if this is strictly a villager thing or what, but after neutralizing the FeCl with some windex, rinsing with hot water, and drying off with paper towel, much of the surface seemed to get an unmistakable look of rust about it. I took some elbow grease and 600 grit wet/dry to get much of that off, but there's still some trouble spots here and there. To be safe in the meantime, I slathered 'er in mineral oil, hopefully preventing further corrosion for a while.