It is extremely important to choose the proper way to package coins being sent to NGC for grading.
It is extremely important to choose the proper way
to package coins being sent to NGC for grading. Depending
on the grading tier you have selected and the method
of shipping, many coins can remain in their individual
sleeves (flips, holders etc.) for up to 30 days before
being encapsulated. This is all the time that is needed
for coins to react with their containers or other contaminants.
Many types of coin flips contain a chemical called
Poly Vinyl Chloride or PVC. This chemical is what
makes the plastic soft and bendable but it can also
be quite damaging to coins. Over extended periods of
time, PVC can actually corrode or eat into the surfaces
of the coin. There are coin flips that are made with
no PVC. Since these flips are much stiffer, they have
the dual benefit of being non-corrosive and more protective
of your coins from receiving hairlines or scratches.
non-PVC flips are the type that we highly recommend.
They can be purchased at most coin shops or from most
coin supply companies.
Please note that there are many negative conditions
that can begin to affect your coins before they are
received by NGC. A few examples are exposure to excessive
moisture and humidity or improper dipping. These conditions
can be accelerated during transportation since each
shipment can undergo several temperature and humidity
changes. Once your coins reach our facilities at NGC,
they are stored in a secure environment that is both
temperature and humidity controlled.