substanceBlack CoatingColors & materialsA named craft material / finish lemma (Black Coating) drawn as an exact public-domain workshop phrase.Black Coating is historically related to Iron.watchmakers-handbook seats orphan black-coating beside iron as a first craft peer — object speech, not a text-container or tradition dump.from Claudius Saunier (tr./ed. PD) · The Watchmakers' Hand Book, PD Gutenberg #76850historically related to · sourced · documentedsourcesThe Watchmakers' Hand Book · Claudius Saunier (tr./ed. PD)Claudius Saunier, The Watchmakers' Hand Book (PD Gutenberg ed.).