Definitions for "Matte proof"
A proof coin or medal with a finely grained finish over the entire surface . This technique was popular in the 19th century and has now been almost completely replaced by the frosting of certain parts of a coin's design.
A proof coin with a fine granular surface - rather than mirror like.
A proof coin with a granular (rather than mirrorlike) surface produced by dies treated to obtain a minutely etched surface