One of my handlebars has a hole towards the end by the grip for the
cable routing/button horn assembly.
My Iver Johnson handlebar has "Iver Johnson" stamped in small lettering.
It was not meant to be for advertising or display but rather for knowing that
the trademark was an indication that the item was part of the original bicycle
when it was constructed at the factory.
The name "Iver Johnson" is stamped on the front hub,handlebar stem and
internal parts on the rear brakes.
The only part that Torrington can be seen clearly are on the bicycle pedal
blocks.
View attachment 737083
One of my early Morrow rear hub brakes has the year 1909 along with patent
number & location. This is not an indication for the year of the bike at all.
But for the hub when it was first introduced.
If there are several years stamped, it would be most likely an update
over the years.
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MY 2¢!