Issue 1 - Mint Error News Magazine

2000-P Massachusetts Quarter
Struck on an Experimental Planchet
This discovery is unique.
It is the only known 2000
dated State Quarter struck
on an experimental planchet.
The original discovery of the
1999 State Quarters struck on experimental
planchets was featured
in a front page Coin World article.
There are approximately 15
known 1999 State Quarters struck
on Experimental Planchets. All five
states in the 1999 series (DE, PA, CT,
GA and NJ) have been discovered.
These Experimental
State Quarters have sold for as
high as $10,000 each, depending
on which state, the coin’s
condition and which type of experimental
composition was used.
There are four known
types of experimental compositions
which have been discovered
so far on 1999 State Quarters.
• Type #1 - This type
has the “color” of a Sacagawea
Dollar and has
the copper center core.
• Type #2 - This type has the
“color” of the Sacagawea
Dollar but does not have
the copper center core.
• Type #3 - This type has
a slight “green” color and
has the copper center core.
• Type #4 - This type
has a slight “green”
color but does not have
the copper center core.
Unique Discovery Coin
Here are a few “telltale” signs to determine if you have discovered a
State Quarter on an EXPERIMENTAL PLANCHET in circulation:
• WEIGHT - The weight on ALL of these discovered so far is
OVERWEIGHT - varying from 5.9 grams to 6.3 grams.
• SIZE - It is slightly THICKER than a regular State Quarter,
due to the heavier planchet.
• COLOR - So far, the pieces discovered are either the same
“color” of the Sacagawea Dollar, or have a slight “green hue”
to them.
• LOOK - The edge is slightly rough and may have a higher rim
around part of the edge.
• EDGE - Some of these do NOT have the center COPPER
CORE.
• STRIKE - None discovered so far are proof-like in the fields.
• REEDING - Some of these have incomplete reeding.
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