Unless it is a major error, like the "broken cc" coin that northern Nevada coin used as the name for their online site.
Actually had offers around $100 on it, so maybe your metaphor should be revised. An MS63 vam 9 is worth over $100, pl coins are worth a significant premium too. "White elephant" means something of little value. It you find a Morgan like this, it should be worth a small fortune: http://www.brokencc.com/modules.php?mod=Pages&op=view_page&pg_id=65
What I want to know is how to get both tape, and magic marker off of a coin. Some knucklehead I bought coins from had marked his own inventory numbers on the surfaces of the coins with Sharpie® brand permanent marker before sending them to me. ???
I wouldnt clean those myself. Id send them to PCGS for a Pro cleaning. With rare and valuable coins like that, you'll probably do more harm than good.
Sharpie markers, even the "permanent" ones will often come off with isopropol alcohol (rubbing alcohol) It will not hurt the coin. Sometimes though selective toning will cause the marks to still be visible even after the ink is gone.
Depends. Sometimes it is the ink reacting with the metal to tone the marks into the coin, and sometimes it is because the ink has protected the metal and the metal around it has toned slightly, Then when the ink is removed it leave a negative image of the marks.
Will the acetone remove glue from nickel and copper coins as well without damaging them? And if that doesn't work can I use the goo gone on the silver coins as well?
Yes, I've used Goo Gone and never had a problem. Acetone may change the color of copper. I use acetone on all metals.