Incidentally, I cracked it while removing it. Not that I was surprised by this turn of events. I'll order 2 replacements, so I can crack the first one of those also.
Several items of note:
1) I'm guessing that the element was manufactured in March of 1995, due to the final "03/95" on the stamp.
2) Check out the polka dots on the wire sheaths. Not sure what it is, but pretty sure I'll be replacing the wires.
3) Plenty of scale and copper corrosion to work on...