Very interesting technique - thanks for posting this! I’ve not seen Gojo used to clean nickels before, but it looks like I’ll be buying a bottle and experimenting with it a little also, starting with some older Jeffersons. Any idea what the active ingredient is that’s cutting through the corrosion? Or could it just be the abrasive properties? So far my best luck cleaning older nickels has been very careful use of SOS pads or 0000 steel wool.
That Shield nickel is in fantastic shape, by the way!