The D'Oyly Carte Opera Company* – Iolanthe

Records made in England.
Spine text: "GILBERT & SULLIVAN IOLANTHE (with complete dialogue) London ffss Stereophonic OSA-1215". Front of box states "Complete with dialogue" and front page of booklet states "With Complete Dialogue"
Front of box has two different logos, both with Full Frequency Stereophonic Sound"
Text on back of box:
LONDON RECORDS, INC.
339 W. 25TH ST.
NEW YORK, N. Y. 1001
Label variations on records with variant 2:
Rim text is around top half of label
FFss logo deleted from top
LONDON in Italic font has FFrr and ear logo, all inside slanted box,then
FULL FREQUENCY RANGE RECORDING, then
STEREOPHONIC
Info left and right of spindle hole rearranged
Made in England deleted from bottom
Paper inner sleeves have plastic lining and "MADE IN ENGLAND 109 41" printed below this text:
"The greatest single advance in sound reproduction since the invention of the phonograph was ffrr (full frequency range recording), introduced on 78 rpm discs shortly after World War II. For the first time, the full frequency range of audible sound (30 cps. - 14,000 cps.) was captured on a disc via a meticulous and highly advanced technology which began at the recording studio and followed through all the mastering and manufacturing stages down to the pressing of the finished disc.Since that time ffrr has been recognized as THE SYMBOL OF SOUND PROGRESS.
With the advent of the London ffrr long playing disc in 1949, ffrr sound was again acknowledged to be the finest in the recording industry. Approximately eight years later, London's engineers began to develop and perfect stereophonic recording embodying the ffrr principle and. when in 1958 this unique system of stereophonic recorded sound was introduced to the public, it represented the utmost in sophisticated technology. Since then ,any improvements have been introduced by London's engineers to keep London technology in the forefront.
With ffrr you are listening to the finest in sound reproduction, for at London, progress never stops."