They're made to match the Coppertone bikes. I have a set I put on my 65 Collegiate.
Originally most of the bikes that were Coppertone, which was virtually every model at
one time or another, came with white grips. Very few came with coppertone
matching grips though you will find them on some of the higher end bikes.
The Collegiates came with black grips, and I hated the look. I thought it looked
wrong. A set of copper chubby grips fixed it right up.
They are not easy to find and not offered reproduction, so if you found a set you
got something quite rare.
Travelers were high end bikes. They came with a full complement of equipment so
you wouldn't have to accessorize with anything- they had a bag under the seat,
light and generator, and all the nice parts like bow pedals, stainless fenders, and
deluxe seats.
Nice touring bike if you can find one that's decent.
--Rob