A specialized designation, Deep Mirror Prooflike (DMPL) describes a specific appearance exhibited by some examples of the Morgan silver dollar. These coins display highly reflective, mirror-like fields with strong contrast to frosted devices, creating a visually striking effect. This characteristic arises from early die states during the minting process when dies are fresh and polished.
The presence of this attribute significantly enhances the collectibility and value of a Morgan silver dollar. Such specimens are highly sought after due to their exceptional eye appeal and relative scarcity compared to coins without this feature. Their historical significance is tied to the minting practices of the late 19th and early 20th centuries and the quality control standards of the U.S. Mint during that era.
