Pressing identifiers include:
• Label code: LY
• Runout stamp: X
• Runout stamp: (Ƨ) or Ƨ
• Label code: 54
The plant was founded in 1947 by Clark Galehouse and named after his daughter Shelley. Prior to 1951 it was located in Roslyn NY, before moving to Huntington Station. Besides pressing for a host of labels small, medium and large (including Columbia and RCA Victor), the company also owned two labels, Golden Crest and Shelley. Galehouse passed away in 1983 and the plant shut down in 1985.
Identified by suffix/code "LY", most notably on Atlantic releases, ('LY' was the suffix used on many an Atlantic and sublabel) LP/45 starting in 1967 and continuing right through 1979 or 1980. LP releases on London Records and its various sublabels (Parrot, Parrot, etc.) as pressed by that plant, bore an 'SH' suffix after the matrix number as on the label.
Also identifiable by "54" numerical code on 1979-84 pressings for PolyGram sublabels, or by a backward stamped (Ƨ) in a circle in runouts. Around 1979 the Ƨ stamp was no longer in a circle.
Shelley used a stamped "X" in runouts prior to 1968. On a few occasions the full name "SHELLEY" is etched in the deadwax, eg. Individually & Collectively
Another identifier are the 3.875" diameter center labels.
Known to have pressed for Elektra, RSO, Avco Records