I've puchased several NEAF "blems" over the years,
and was not able to detect any flaw except the
punch mark.
I've also seen a number of TV non-blems with obvious
optical flaws -- circular zones, bubbles in glass,
too much scattering in the cement, field stop in
wrong place, etc.
Go figure.
and was not able to detect any flaw except the
punch mark.
I've also seen a number of TV non-blems with obvious
optical flaws -- circular zones, bubbles in glass,
too much scattering in the cement, field stop in
wrong place, etc.
Go figure.