The Hebert's Catalog
of plate number singles lists the "Sea Coast" coil (water activated gum) and with plate# B111
(Scott catalog # 3775 which has the 2003 date in blue and vert perf 9 3/4 ) valued as 50 cents used and $1.00 as mint! The Sea Coast stamp coil (Scott catalog # 3785 with full perf ,self adhesive) Plate# P1111
as 75 cents used and $1.00 mint, and SC#3785a 9 1/4X10 with P2222
as the same value. Not bad for a 5 cent stamp!Maybe you'd like to collect PNC's , Triggersmob!
I love the PNC's
,and it narrows it down from the whole world collecting which is better for the space I have to store my collections.