A proof coin with a grainy surface appearance produced by dies treated to obtain a minutely etched surface.
an experimental proof strike with sandblasted or acid-pickled surfaces
A certain type of proof minted in the US. mostly from 1908 to 1916. Gold and silver matte proofs have a dull, granular (i.e.. sandblast) finish without any mirror-like qualities. Copper and nickel matte proofs are really more like Roman finish proofs. (See "Roman Finish').
Proof surface with somewhat granular finish.
A special type of' proof finish used at the Philadelphia Mint prior to World War 1, This method was first employed by the Paris Mint and was later adopted for a limited time during the 1908-1916 years for certain (but not all) issues by the Philadelphia Mint. The surface is prepared by a special process which gives it a grainy appearance.
matte proof coins are special proofs that have a grainy "sandblasted" look on the surface.