Technicians at the Philadelphia Mint continue to experiment with
Proof polishing and laser frosting techniques that are executed on
dies by manual or automated means. Using these techniques, the Mint
can achieve more than two finishes on one coin.
In 2014, multiple finishes achieved through various intensities and
levels of Proof polishing and laser frosting are being used on the
reverse of the Proof 2014-P Civil Rights of 1964 silver dollar.
According to Steve Antonucci, manager of Digital Process &
Development at the Philadelphia Mint, this is the first time this many
finishes in these intensities have been used on the same coin.
“Most notable is the use of mirror polishing in conjunction with
multiple finishes and textures applied to supporting elements,”
Antonucci said. “The field under the flame incorporates a unique
combination of finishing processes where a light polish is applied,
and then a light laser frost texture is summarily added.
“All lettering and the torch received a heavy laser frost treatment.
Finally, the circular textured ring under CIVIL RIGHTS ACT OF 1964 and
UNITED STATES OF AMERICA received an accenting polish treatment to
enhance the beauty of this design.”