Polskie Nagrania Muza

Profile:
Polish state-owned label in the People's Republic times, still active these days (releasing mostly the old, remastered recordings, classical music, operas, etc.). Contact Info: Polskie Nagrania ul. Okaryny 1, 02-787 Warszawa Poland

Numbers
0001-0499 series 0500-0999 series 1000-1499 series 1500-1999 series 2000-2499 series 2500-2999 series 3000-3499 series

Prefix
SP - 7" / 45 rpm mono single play SS - same line as above, but in stereo (from mid 70's) N - 7" / 45 rpm mono EP SN - same line as above, but in stereo (from mid 70's)

L - used for 10” / 33rpm longplays

for 12" longplays: XL - used for mono LPs – up to 1975/76 SXL - used for stereo LPs – up to 1975/76 X - used for mono LPs (mainly reissues) – after 1975/1976 SX - used for stereo LPs (reissues and new releases) – after 1975/1976 In the transition period quite often there was a different prefix printed on the sleeve ( XL/SXL or SXL) and on the centre label (X or SX)