Conservation
Details grade
Grado Details
An NGC or PCGS grade that authenticates the piece and describes the wear — for example About Uncirculated — but withholds a Sheldon number because of damage (edge filing, cleaning, scratches). This collection’s 1761 Utrecht ducat is NGC AU Details (Edge Filing).
See also: NGC , About Uncirculated (AU) , Sheldon Scale , PMG / PCGS