Multinational label.
Concert Hall Society, Inc. was a record club founded in 1946. The company originally announced that it would turn out only 2,000 copies of its albums, cutting directly from "masters" and thus eliminating the "mother" and "stamper" discs used for mass production of commercial records. This policy was only maintained during the first few years, however, and Concert Hall quite rapidly evolved into a budget label for classical music, often operating as a record sales club in various countries. Releases were available only to members.
President of Concert Hall was Dr. David Josefowitz.
Concert Hall didn't have a pressing plant of its own but had its releases - and those of its various sub-labels - pressed by various pressing plants and then distributed all across the US, Canada and Europe. There were also releases for the Japanese market.
Some plants can be identified by 1 or 2 letters on the labels:
AH = Artone Holland
P = Philips Phonografische Industrie or Phonodisc B.V.
D, M = unknown
PE = Philips Records Ltd. (Philips England)
TU = Turicaphon AG
Some other plants can only be detected in the runouts:
ARC = Allentown Record Co. Inc.
I = RCA Records Pressing Plant, Indianapolis
M1, M3, M6 = Pathé Marconi, Chatou
R = RCA Records Pressing Plant, Rockaway
TU = Turicaphon AG
Codes such as "F8OL-4513" or "E 3 K U 5586" on the labels and/or runouts would mean a mastering by an RCA Victor studio (see here for complete reference).
Codes such as "EB-xxxx" (e.g. EB-2287) or "GB-xxx" (e.g. GB-288) on the labels and/or runouts would mean Manufactured By Capitol Custom.
