Yeah the reverse definitely looks like an acid experiment. Those lines on the Obverse are kinda weird. Maybe it was lying in the ground for many years before it was out and "cleaned" up.
Yeah scans are bad so I Just snapped some pics using my iphone with a loupe and edited them in original post. When I first saw this i was skeptical but looking at the coin in person I believe it to have no acid, glue, or residue on it nor has it been cleaned or been in the ground. It still has nice luster. What I see with my loupe are high spots with too much metal and low spots on the coin. Looking at "IGWT" there is high spot in the last two letters of "TRUST". The ST is embossed into this high spot on the coin. Please review the new pictures and let me know what you think.
Those are just lens flares spots on the reverse pic from my loupe so please disregard the 3 spots. This scan shows reverse without lens flares spots.
Acid eats away metal. So what would be the cause of the high metal spots on the coin? Looks like the coin was struck into the high spots as if it was an issue with the planchet. Taken from www.coingrading.com : Planchet Flaw-Raised Metal, Missing Metal, Peeling metal and annealed planchets are just of the few min made flaws, which if large enough, will disqualify a coin from encapsulation. What do you think?