Ok, so being a big nerd, I had to test the SG...with the scale I have. Extremely easy process. Unfortunately due to my scale only having a .1 accuracy as opposed to .01, it's far from conclusive. My second number was bouncing between 1 and 1.5. With the variable of the string, it's almost spot on. Again, not the right scale for this, but I'm satisfied by it. Pretty neat test, thanks for the suggestion.
I'm going to make a wild guess and say it looks vaugly like someone was attempting to do EDM (electrical discharge machining) and was using that coin as the electrode. People occasionally use coins when they are first trying out their new homemade EDM rig.
I would call it a reasonable assumption that it isn't a deliberate counterfeit, to look like that. It may_be a counterfeit, but it befell whatever violent event "melted" the features anyway.
I'll send it off and see what happens. With what I've learned from this is well worth the money to send it off, even if it's fake. I've really enjoyed this discussion. I have some stuff going out probably next week, so I'll just add it to the batch. I'll repost on here when I here something, regardless of what the result is. Thanks everyone for the thoughts on the matter.
I got pretty much the same effect from a wire brush on a bench grinder preparing old guns for "rebluing" when doing a little gunsmithing."Smears" the metal depending on the force applied....
Trouble is, if they don't like it, they won't tell you what happened to it (if they know). We know darn well the Mint couldn't do it, so chances are all you'll get is the binary Fake or Authentic, Damaged.
Everyone has glossed over Larry's half-joking, half-serious answer. This looks just like the acid-etched Lincolns you see over in the "post mint damage forum", er, I mean, the error forum.
Yes, the comment definitely went over my head. I generally just blow off half serious comments. Sorry, I'm a habitual party pooper. As previously posted, we probably won't know exactly what happened for sure unless it comes back as a mint error, and we all know the odds of that happening. I sent off 10 coins yesterday, so it's no big deal to me as I spread the costs out amongst all of them. 37d 3-leg buffalo and an outstanding cherry picked 1960 D/D Sm over lg date are a couple of the more fun ones I sent off.
This was my initial assumption as well. I'm surprised that it took nearly two pages to note that the most obvious answer was given in the second post in the thread.
I don't think it is acid. Too many details are too strong or at least comparatively strong. I would guess a late stage capped die - on both dies.
The biggest problem is my fault. The coin looks almost nothing like what I posted, halogen lights really dull out a coin. It has strong details on about 1/3 of the coin and has nice luster.
My first impression was polishing with a fine material. There is some metal displacement and obvious uniform hairlines throughout, plus an acid bath or heat would affect the edge too. It would also explain why some of the lower profile details are relatively sharp compared to the higher profile ones like the central parts.
I have flashbacks every once in a while too. The 70's and 80's were fun. It's a fun coin, and one of the best thread titles of all time, but in the end analysis I cannot think of a way the Mint could have generated something like this. Not that I know everything.