Green’s Dictionary of Slang

(orig. US black) a vinyl record; also attrib.

1928		W. Winchell Your Broadway & Mine 3 Nov. [synd. col.] Ruth Etting lullabying ‘Beloved’ and ‘Sonny Boy’ on the Columbia platters.
1937		R.B. Nye ‘A Musician’s Word List’ in AS XII:1 47: platter. A phonograph recording.
1938		W. Winchell On Broadway 6 Aug. [synd. col.] Eddy Duchin’s recording of ‘Ol’ Mose Mose’ has peddled nearly 90,000 platters.
1943		H.A. Smith Life in a Putty Knife Factory (1948) 191: I stopped in the record shop [...] and bought a couple of Crosby platters.
1949		Dan Burley ‘Back Door Stuff’ 9 Apr. [synd. col.] Manhattan Records is newest on the platter market.
1959		C. MacInnes Absolute Beginners 143: ‘Fuss ov all,’ said Ted, ‘abaht vese platters.’.
1966		T. Keyes All Night Stand 136: From us to you its swingin platters and groovy sounds.
1978		S. King Stand (1990) 840: A golden goody, the DJs called it [...] A Platter that Matters.
2005		(con. 1992) B. Coleman Rakim Told Me 142: Consisting of only seven songs, it was still a beefy platter, because the songs were longer than most at the time.