carbon-copied
/ˈkɑːbənˌkɒpid/adjective
Duplicated using carbon paper. Now chiefly in extended use: exactly replicated; of which there are multiple (similar or identical) examples.
Origin
Late 19th century; earliest use found in ‘John Oxenham’ (1852–1941) (real name William Dunkerley). From carbon + copied, past participle of copy, after carbon copy.