Per http://www.cleveland-metal.com/history/blackdeath.php:

"After forming in 1977, this four-piece became one of the area's premier bands--not to mention its only all-black heavy metal group. Led by metal maniac/wrestling fanatic singer Siki Spacek--who never went out in public without wearing his guitar over his shoulder (even while working his day job as a safety patrol guard)--the band's black leather and chains, straight-ahead metal routine attracted a large following in the mid-'80s. After landing a deal with Auburn Records, Black Death released their self-titled debut in '85, a record that sold 1,000 copies within ten days of release. But one thing kept them down. 'Their biggest problem was finding a replacement if a member quit the band--there just weren't that many black guys in town who could play metal,' says Auburn Records president Bill Peters."

Per 10/11/07 excerpt from Philadelphia Daily News:

Pure Hell, the first all-black punk band, will play a reunion show Oct. 27 at the El Bar (Front & Master). Hell Under the El present the Blessed Muthas, Dead Gerber Babies, Scareho, King Friday the 13th and Hot Wired Hearts. Pure Hell formed around 1975 and used to pal around with the Sex Pistols.