black rotary-dial telephone
Refers specifically to the classic black telephone with a rotary dial, commonly used in Japan until the 1980s. Now mostly a nostalgic or historical term.
There is still a black rotary-dial telephone at my grandmother's house.
プッシュホン is a push-button dial telephone, while 黒電話 refers to the older rotary-dial (often black) telephone it replaced.
Compound of 黒 (black) and 電話 (telephone), referring to the standard black rotary-dial telephones once common in Japan.