I would like to share my opinion (assumption, theory) about SONOPRESS matrix identification. It's not a secret that often labels, especially old Roadrunner releases printed only original release date on CD or back cover, but anything about exact pressing date. I discovered and compared this theory on many RR pressings. I think actual pressing date coded in a letter on matrix after SONOPRESS word. Similar to
Gramofonové Závody CD matrix scheme, but started years earlier.
So, that's how i see it:
A - 1986
B - 1987
C - 1988
D - 1989
E - 1990
F - 1991
G - 1992
H - 1993
Example:
http://www.pinkfloydarchives.com/Discog ... matrix.jpg
A CD made in 1987 i believe. At least most of my Roadrunner CDs that i counted as "original 1987" press match to this theory, but some aren't. For example CDs from 1990 have letter "D" on matrix, so i think it could be difference in month, not in year for example last days of December 1989, CD was pressed earlier than covers or something like this.
The most interesting story with famous "Price Killers" series: (Once Heathen asked about pressing year of them, but i replied they are all from 1990, so seems like they are not)
Agent Steel, Paradox, Whiplash "Ticket...", Carnivore "Retaliation", Fifth Angel, Razor, Vicious Rumors, Possessed, Voivod are from
1988
Detente, Whiplash "Power...", Venom (both), Carnivore "Carnivore", Chastain, Racer-X are from
1989
I tried to follow this version with catalogue numbers logically, but it's useless
Also i realized that all No Remorse Records (german, not modern greek) CDs printed on Sonopress, had different design and without letter after SONOPRESS writing. We are all know that those Sacrosanct, Grinder EP, Blind Guardian, Wardance CDs from 1990, but still...if there would be no date of pressing then i don't know how to identify those matrices.
P.S: There's also widespread belief about Black Sabbath CD from 1985:
http://www.ebay.co.uk/itm/Black-Sabbath ... 1120522714
and probably it's a reason why it's sells for so much, but in my opinion it's not 1985, but just 1987. Yes, i know Sonopress officially started to press CDs as early as 1984, but i don't have any CD from pre-1987 era with letter "A" in matrix and i would look for a real 1984-1985 pressing of SONOPRESS matrix.
As always i would be appreciated for your opinions, corrections, details, knowledge about this specific topic etc.