Many hobbyists are familiar with silverware hallmarks identifying
the metal’s purity, maker, and city and date of manufacture.
Just as a certain hallmark by a country’s assay office might
identify a silversmith, a privy mark — a common symbol or object —
also acknowledges engravers. French coinage makes use of the privy for
this purpose, such as a bee for engraver Pierre Rodier or hunting horn
for Hubert Larivière.
One of the U.S. Mint’s most breathtaking coin designs — the
reverse for the Proof 2009-W American Eagle $100 platinum coin, by
Artistic Infusion Program Master Designer Susan Gamble — contains an
eagle privy mark.
Gamble’s design was the first in the Mint’s platinum coin program,
a program with a theme based on the preamble of the U.S. Constitution
and set to end in 2014. Designs focus on such phrases as “To Form a
More Perfect Union” (2009), “To Establish Justice” (2010), “To Insure
Domestic Tranquility” (2011), “To Provide for the Common Defence”
(2012), “To Promote the General Welfare” (2013) and “To Secure the
Blessings of Liberty to Ourselves and our Posterity” (2014).
Gamble’s coin has heads of men and women representing ethnic
groups, their hair flowing together to create a frame. Under the
inscription A MORE PERFECT UNION is an eagle privy mark (raptor’s
head) that the Mint reports was “from an original ‘coin punch’ ”
identified at its Philadelphia facility.
The privy mark here is a design component that mitigates artistic
“busy-ness” of too many devices for the canvas of a planchet, an issue
in many modern commemorative coins. Gamble’s rendition is cleaner for
the privy mark rather than, say, a variation of the eagle with olive
branch and arrows, as appears on the Great Seal of the United States.
Privy marks are common in world coinage. Canada has used the
symbol as both a design and commercial component in its Maple Leaf
1-ounce silver $5 series. You’ll find privy marks of the Chinese and
Western zodiacs. A 2005 coin has a privy mark of a tank to celebrate
“Victory in Europe Day.” One of the most popular Maple Leaf coins is
dated 1998 with a Titanic privy mark and low mintage of 26,000.
Canada’s use of the privy mark also is economical. Other mints,
including the United States Mint, might be tempted to issue a series
of coins in various denominations based on a commemorative occasion.
At the November 2010 meeting of the Citizens Coinage Advisory
Committee, of which I am a member, we discussed proposed
commemoratives: a copper-nickel clad half dollar and a silver dollar
to honor the 150th anniversary of the American Society for the
Prevention of Cruelty to Animals. (Another program would honor Route
66, with a recommendation for eight coins — one for each state the
highway runs through.)
Of course, it didn’t occur to me at the time, but a privy mark on
one coin for each proposal — featuring different animals for the ASPCA
and for each of the Route 66 states — would be a cost-saving feature
for both the Mint and hobbyists.
Privy marks serve various purposes — one of which might be to
encourage you to look at hallmarks on your silverware and jewelry.
Michael Bugeja, a coin collector since childhood, is a professor
at Iowa State University and also a member of the Citizens Coinage
Advisory Committee. He is a nationally known author, journalist and educator.