There are a few different Doyle variations that stem from the removal
of the NAT'L.
The one that has been posted in this thread that shows a small piece
of the N that didn't get removed.
then there are several examples of this variation that has the upper right
of the Y and the period after the Y missing
http://sterlingsportsauctions.com/Lo...ntoryid=42288#
and this variation that has the bottom part of the Y missing.
This one is also found on a Sovereign 350 back with an
additional matching print flaw.
Doyle missing bottom of Y.jpg
Doyle missing bottom of y Sov.jpg