Known Brain LP pressing variations...

See my Brain label guide to identifying pressings at...
http://www.ultimathulerecords.com/referencebrain.html

Green Brain Metronome LP label versions: (original examples) description
Version 1: (Brain 1001-1003 only) deep olive green label with 30mm dink ring and 20mm raised ring 1972
Version 2: (Brain 1004-1010 only) deep olive green label with 30mm dink ring 1972
Version 3: (Brain 1011+1012+1014+1020 known) slightly lighter olive green label with 20m & 15mm rings 1972
Version ?: (Brain 1013+1015+1016) not confirmed, documented with Version 6 labels
Version ?: (Brain 1017-1018) not confirmed, documented with Version 5 & 6 labels
Version 4: (Brain 1019) Khan - Space Shanty 1st press, as version 3 but with raised 30mm ring 1972
Version ?: (Brain 1021-1022) not confirmed, documented with Version 5 & 6 labels
Version 5: (Brain 1023-1050) label as version 3. Raised centre 20mm ring with 3 raised dots 1973-74
Version 6: (Brain 1051-1055) label as version 3. Raised 20mm ring has no dots 1974

Pressings companies: 1+2. Deutsche Grammophon, 3. unknown, 4. unknown, 5. Phonodisc (Hannover), 6. Metronome (Hamburg)

Known Brain CD pressing variations...

1. Original 1st press is a "silver to centre" disc.
2. 1994 press 18mm clear centre (often with no manufacturer)
3. / 4. 1994-98? press 18mm clear centret, will have manufacturer(s) on disc
5. 1997-98 reissues released by Repertoire Records
6. 1998?+ pressings 25mm clear centre
7. 2004+ pressings in Digipak cover
8. 2007 pressings in Digipak cover - co-released with Revisited Rec.

Notes:
Original 1st press Brain CD issues started in late 1983.
Early 1983-85 issues mimicked the black Brain LP label.
1985 and later issues are generally silver disc with black print only.
The style of disc pressing "silver to centre" flat discs (with no stacking ring) continued to 1993. There may well be pressing variations within that period that we don't know about.

1988+ pressings some earlier discs (with standardised design) were repressed with better artwork, CD production was upped beyond the dozen or so to 30+ over the next 5 years.

1980s 2CD sets came in "fat boy" multiboxes. Later issues came in slim "brilliant box" cases.
Some Repertoire CD reissues replicated the Green Brain label (and invented some new variations).
Universal & Revisited reissues used beige background on most labels.

All known Brain CD's have barcodes

A lot of disc type rules 1-4+6 apply to other German Polygram/Phonogram/Universal labels
Please post any updates/corrections to: ultimathulerecords

I decided to do this after I came across so many things that were wrong and got fed-up with having to explain things over and over again. If you know any extra points that I should add, or something I don't know, then I'm eager to learn!