I stumbled across this coin a few weeks ago and put it in my DDR pile to be checked later. Well today i was checking my "to confirm" pile and I can't seem to find a match for it on Wexler's list or CONECA's list. So am i just wrong about it all together or .........
What you are seeing is normal. On a well struck coin the insides of the pillars will be more defined. That's part of the design. As the die wears these devices will begin to fade or completely disappear. It's the same with the roof supports.
i just thought because i'd never seen the 7th column with the shadow of one behind it that maybe i'd found something. again thank you for letting me know.