1968-D Cent -- Extremely Strange Doubling (And More!)

[[Edited to add uncropped (but reduced size) full frame image of reverse, to provide some idea of the amount of cropping that was necessary.]]

It is with great trepidation that I post another coin... <g> (And then I'm gonna give it a break. Don't want to wear out my welcome *too* soon -- assuming I haven't already managed that!)

I have a 1968-D with multiple issues -- the most dramatic of which is an apparent feeder finger strike, which took out a fairly substantial chunk from the rim area (maybe 1/16th inch or so) on the reverse, extruded part of the obverse rim into the IGWT lettering, and warped that part of the coin. It also took out some minor chunks on the face of the reverse side.

[[At this point, I'm going to interrupt myself, and say that I am sort of bracing for an onslaught of "PMD! PMD! PMD!"

If it's of *any* help to avert the pitchforks and torches, I want to *try* to assure you that I'm quite familiar with PMD in many if not all its permutations. I keep two jars by my desk: One says "Spend Me!" and the other says "Gag Coins." The first jar is regularly emptied by my wife into a *big* jar. The second jar awaits the day I finally get caught up on "stuff" and make a Youtube parody reel, featuring "R@RE COINS! unlike *any* other!" (When I get caught up... In other words, that jar will probably get spent a day or so after they toss my ashes into the breeze.)

end_self-interruption]]

It also appears to be a DDO coin (spread on the lettering, with faint separation line on several of the characters). The coin is dark, appears to be an annealing mishap/sintered coin, which promoted a "lovely" coat of verdigris (removed courtesy of a few drops of " Verdi-Care"), but an overall good, solid strike with nice sharp, crisp edges on the lettering and bust.

But, the MOST curious aspect is the DDR (if not a doubled die, I have NO clue as to what caused this, I've never seen anything like it). The word "UNUM" is doubled. By "doubled" I mean the word is REPEATED!

Just to the right of "UNUM" is a very faint "UNUM"! The duplicate does not overlap the original, it's not at an angle, and the very weak impression is stronger at the top, with a fairly sharp "cut" at the top of each letter (the flat part at the top of each part of each letter). At first glance, it looked like a series of dashes, but when I took my loupe to it, I could see that there were actually *letters* beneath the "dashes" which were actually the tops of each letter.

As soon as I get set up to be able to take decent photos, I'll post something better than these two (taken with the same P&S as the other coin, same obscenely severe cropping). My Micro-Nikkor on my Pentax DSLR, with some decent lighting, and this coin's features will have much better visibility. (I'll also rig something to hold the coin on edge, so that I can photograph the warp.)

For now, I'm afraid the written description will convey much more information than the visual.

Anyway, does anyone have any idea about that UNUM doubling ? (It is just *barely* -- and partially -- visible in the image below.)