Wow! It may be in the CUD Book, which I have a copy, only it's in storage - and I'm not sure what box it's in. So I can't help by looking it up. There are some really large CUDS on Shield nickels
in that book. This one is a doozy! Also just because it's not listed at cuds-on-coins or in any of the big books certainly doesn't mean it's not known, there are a lot of lesser known CUD errors around. This one is sure a major one though. Very impressive.
"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013! ANA
Life Member #3288 in good standing since 1982, EAC Member #6202, NBS Member, 2¢ variety collector.
See my want page: http://goccf.com/t/140440