1946 S Strange Error? Any Ideas? Possible Values?

What I thought at first, I thought it might of been melted when I first found it almost a year ago. The only Time I have taken it too someone they told me it might of been struck threw grease, or lamination error, but still that doesn't make sense. the coin have extra been of metal on the front, and on the back the bubble is above a line that almost seems like another coin could have been there. Also it is a depression where it is, yet there lettering that shows is still intact and shows there. wouldn't make sense if it was melted some how, or a lamination error.

to CCF, this is just PMD, nothing else, but PMD

Thanks all. Yeah copper solder seems more reasonable to me, or the melted penny on top. Still it is just strange. The picture doesn't really does it but where the blob and Tim are at slants in wards, yet the lettering still shows, and slands in with it. If the penny melted to slope in that far, the lettering would have went with it, not fall in. It is about enough room for the extra blob of metal to fit there it seems. I still have suspicion on how it is but even if PMD makes you wonder the things that happen to these coins