EXTREMELY FINE GEM. THIS SUPERB MINT NEVER-HINGED GUIDE LINE PAIR OF SCOTT 390 HAS BEEN AWARDED THE PERFECT GRADE OF GEM 100 BY BOTH P.S.E. AND THE PHILATELIC FOUNDATION.
Ex Depew. With 2019 P.F. certificate (Gem 100). With 2007 P.S.E. certificate (Gem 100; SMQ $1,900.00). Early coil pairs, and especially guide line pairs, are exceedingly difficult to obtain in this perfect grade. For multiples such as this both stamps must be perfectly centered. This is the highest grade awarded and it is shared by only two others.