use the term “slab coin” to describe a coin that has been certified by a
professional grading service. As an independent third party, a grading service
can objectively attest to the condition of the coin and provide certification.
“Slab” refers to the encapsulation of the coin in a sealed tamper proof holder
by the grading service. We are proud to
offer a selection of Slab Coins authenticated and certified by the highly
respected American Alliance Coin Grading Service (AACGS).