The SOVEREIGN issue was first to introduce an intermediate series between the 350 Series and the 460 Series.
This series is classified as the 350/460 Series. However, in the SOVEREIGN issue, only the 6 super-prints were
printed with 350 and the 460 series backs.
Shown here are 3 of the 6 super-prints. Observe the difference in the shade of green between their 350 backs
and the 460 backs.
The next post will cover the other 3 super-prints.
TED Z