The matrix numbers on these mono editions says it´s the stereo versions. ACRS 4523 and ACRS 4524, where the S stands for stereo. Also the original US number in brackets is the mono/stereo version, 1950´s tracks in mono and 1960´s tracks in stereo, CALX 2472. I have this "mono" album and it plays in mono and stereo.
'You'll Never Walk Alone' was the first release on the new RCA Camden budget label in the UK.
Over the years the Camden labels came in all different shades of blue and turquoise. There was a notable change by the record label around 1978 when they dropped the RCA logo from the sleeve and album label, instead just using 'Camden'.
Uploaded the Canadian pressing that could be found in UK sleeves in around 1971 and the 1978 'Camden' variation.
The sleeves also have two main variations:
Manufactured by RCA LTD for Pickwick International Inc (GB) LTD Victoria Works, Edgeware Road, London, NW2. (Rear Cover, Bottom)
Manufactured by RCA LTD for Pickwick International Inc (GB) LTD The Hyde Industrial Estate, The Hyde, London, NW9 6JU. (Rear Cover, Bottom)