So I have been doing a lot of research lately and after finding 2 examples of the 1975 DDO
that tanman2001 originally discovered I went on to find another example but for 1976.
Upon further inspection I came to notice that the doubling is identical on both 1975 and 1976, so to cut to the point is there any way that the Obverse dies from 1975 could have been used in 1976 for any reason? I'm just curious to know how the exact same doubled die can happen 2 years in a row, and my thought was maybe the mint used some left over obverse dies from 1975 to mint the 1976.
I do know that for 1975 there was over 650 million minted, and in 1976 there was just over 701 million minted, so that is where I got the idea maybe they borrowed some leftover obverse dies from the previous year, I guess you could say kind of like what happens with a mule coin.