As you may know, a lot of fakes of these stamps are known. The Scott Specialized Catalog includes this "Important Note" for discerning those differences:
Quote:
"Nos. 658-679 with original gum have either one horizontal gum breaker ridge per stamp or portions of two at the extreme top and bottom of the stamps, 21mm apart. Multiple complete gum breaker ridges indicate a fake overprint. Absence of the gum breaker ridge indicates either regumming or regumming and a fake overprint."
My 2011 Scott Specialized suggests the set of 11 mint stamps are cataloged at $229.10; in MNH condition, the catalog value rises to $478.75.
Posted 02/02/2013 6:22 pm
)
