So I've came across twelve of these so far and am pretty stoked. They appear similar to the link listed but not exact. Die scratches run northwest to southeast as opposed to what Variety Vista has listed. There isn't any part of the extra d showing either. Coppercoins has 1mm-001 that also sounds similar but no pictures. Could this just be a different die state? The first four pictures are of the same coin. The last two pics show the mint mark from two of the other 1979 d's, capturing the same split for comparison.