From the PDF link posted on page one of this thread:
Quote:
The Z Grill is significant
in the study of grill
production for several
reasons. First, the grill itself
is unlike all other grills used
on United States stamps. As
the enlarged photo in
Figure M shows, the top of
each pyramidal point has a
ridge that runs horizontally
across the grill point. Some
collectors call this the
rooftop. Only on the Z Grill
is the rooftop line
horizontal—all others have
either an X-shaped point or a vertical ridge. The Z
and E Grills are the same size, but the distinctive
horizontal ridge on each Z Grill point is its
identifying feature. Collectors and dealers who
know what to look for have found Z Grill stamps
misidentified as the more common E Grill.
Posted 03/07/2025 02:31 am
