Nucleus/Ian Carr’71 – Solar Plexus – Vertigo – UK – 39.500 (gfc, swirl label)

Nucleus/Ian Carr’72 – Belladonna – Vertigo – UK – 40.500 (gfc, swirl label, swirl inner)

Nucleus/Ian Carr’73 – Labyrinth – Vertigo – UK – 20.500 (gfc, jazz/prog)

Nucleus/Ian Carr’73 – Roots – Vertigo – UK – 15.500 (jazz/prog)

Nucleus/Ian Carr’75 – Snakehips Etcetera – Vertigo – UK – 10.500 (jazz/prog)

Number One Ensemble’80 – Gipsylon – Radio – Italy – 3500 (italo-disco)

Nuova Idea’73 – Clowns – Ariston – Italy – 55.500 (gfc, prog)

I Nuovi Angeli’73 – Troppo Bella – Philips – Austria – 1500 (italo-pop/rock)

I Nuovi Angeli’74 – Stasera Clowns – Polydor – Italy – 9500 (inner, rock)

The Nutty Professor’96 – Soundtrack – Def Jam – USA – 2200 (still sealed, rap – LL Cool J, Jay Z, Monica, Warren G, Da Bassment, Case, Montell Jordan)

O Brother, Where Art Thou?’03 – Music From The Film – Lost Highway – USA – 2500 (2LP, soundtrack)

Sinead O’Connor’90 – I Do Not Want What I Haven’t Got – Ensign – Italy – 2 500 (inner, pop vocal)

Sinead O’Connor’92 – Am I Not Your Girl – Ensign – Germany – 3500 (inner, pop/jazz vocal)

Oasis’95 – (What’s The Story) Morning Glory? – Creation – UK – 15.500 (2LP, triple gfc, 2 black inners)

Ocean’77 – God’s Clown – Crypto – France – 15.500 (hard rock/prog)

Ocean’81 – Same – Barclay – France – 5500 (inner, hard rock/prog)

Ocean’78 – Drift Message – Schnoutz – Switzerland – 7500 (inner, Swiss band, autographs on back cover)

Billy Ocean’89 – Greatest Hits – Jive – EEC – 1800 (inner, soul/funk)

4140. The Oceans’82 – Movin Cruisin – Gira – Spain – 2500 (disco project by La Bionda)

Octopus’69 – Same – ESP-Disk – USA – 15.500 (in shrink, prog)

Octopus’81 – Taerie Wiighen – Octocon – Norway – 25.500 (booklet, prog)

Odin’72 – Same – Vertigo – Germany – 49.500 (swirl, prog)

Odissea’73 – Same – Ri-Fi – Italy – 9990 (gfc, inner, Italian prog)

Odmenn’70 – Same – Sun – Iceland – 20.500 (1979 reissue, 2LP, gfc with attached booklet, prog)

Odyssee’78 – White Swan – MPA – Germany – 9500 (insert, prog)

The Offspring’98 – Americana – Columbia – USA – 9500 (inner, incl. superhit Pretty Fly For A White Guy)

Claude Ogiz’80 – Les Balieues De L’Univers – private – Switzerland – 5500 (gfc, Swiss artist)

4149. Oh! Calcutta!’71 – Same – Calcutta – Holland – 6500 (poster gfc, featuring Thijs Van Leer)

Ohio Players’72 – Pleasure – Westbound – USA – 3500 (gfc, label inner, funk)

Ohio Players’75 – Fire – Mercury – Japan – 2000 (insert, funk)

Ohio Players’79 – Everybody Up – Arista – Holland – 2500 (gfc, funk)

4153. Kunio Ohta Quartet + 1’76 – Free And Lovely – Three Blind Mice – Japan – 9990 (obi, booklet, jazz)

David Oistrakh’69 – Dacapo – HorZu – Germany – 1500 (label inner, classical violin)

4155. Okko’71 – Sitar & Electronics – BASF – Germany – 29.500 (gfc, prog)

Boulat Okoudjava’7 2 – Poete Compositeur Sovietique – Le Chant Du Monde – France – 5500 (triple gfc, Булат Окуджава)

Boulat Okoudjava’80 – Le Soldat En Papier – Le Chant Du Monde – France – 5500 (booklet, Булат Окуджава)

Bulat Okudshawa’88 – Lieder II – Plane – Germany – 7500 (inner, Булат Окуджава)

Finn Olafsson’s Savannah’77 – Same – KMF – Denmark – 7500 (ex-Ache guitarist, progressive)

The Old Man And The Sea’90 – Unreleased Second Album – private – Denmark – 9500 (prog)

Old Timers/Marianna Wroblewska’75 – Meeting – Muza – Poland – 1500 (Polish Jazz Vol. 44)

Old Timers’78 – With Wild Bill Davison – Muza – Poland – 1500 (Polish Jazz Vol. 57)

4163. Mike Oldfield’82 – Five Miles Out – Virgin – Germany – 1800 (gfc)

Mike Oldfield’91 – Heaven’s Open – Virgin – Germany – 2800 (inner)

Mike Oldfield’92 – Tubular Bells II – Warner – Germany – 3500

Mike Oldfield’93 – Elements-The Best Of – Virgin – UK – 5500 (16 best tracks)

Sally Oldfield’90 – Natasha – CBS – Holland – 2000 (inner)

4168. Olsson & Fitinghoff’74 – Same – CBS – Sweden – 5500 (inner, folk/rock)

Olympic’78 – Overhead – Supraphon – Czechoslovakia – 1500 (rock)

Omega’73 – Same – Bacillus – Germany – 4500 (gfc, English-language album, Dieter Dierks, prog)

Omega’79 – Gammapolis – Pepita – Hungary – 3500 (gfc, prog)

Omega’81 – Working – WEA – Germany – 1800 (prog)

Omega’82 – Х I – Pepita – Hungary – 1800 (insert, prog)

Omen'85 – Warning Of Danger – Roadrunner – Holland – 2500 (inner, heavy metal)

One’69 – Same – Fontana – France – 35.500 (gfc, prog)

One For All’05 – Killer Joe – Venus – Japan – 8500 (obi, insert, audiophile jazz sextet)

4177. One More Chance’73 – Various Artists – Charisma – UK – 3500 (inner, compilation of singles by Genesis, VDGG, Audience, The Nice, Rare Bird, etc)

Yoko Ono’71 – Fly – Apple – USA – 10.500 (2LP, gfc, 2 inners, poster, card, featuring John Lennon, Ringo)

4179. Yoko Ono’73 – Approximately Infinite Universe – Apple – UK – 7500 (2LP, 2 inners, gfc)

Opale’81 – La Derniere Toile Du Maitre – Podom – France – 9500 (gfc, prog)

O.P.M.C.’70 – Amalgamation – Pink Elephant – Holland – 9500 psych/prog)

Opus'80 – Daydreams – Philips – Austria – 9500 (prog)

Opus Avantra’75 – Lord Cromwell – Suono – Italy – 6500 (gfc, prog)

4184. Opus III & Friends’70 – Same – Sonet – Sweden – 18.500 (prog)

Orange Bicycle’70 – Same – Parlophone – UK – 65.500 (flipback cover, label inner, prog)

4186. ORB’95 – Orbus Terrarum – Island – UK – 7500 (gimmick plastic cover, 2 map inners, electronic)

Roy Orbison’64 – More Of Roy Orbison’s Greatest Hits – Monument – USA – 2800 (60’s)

Roy Orbison’66 – The Classic Roy Orbison – London – UK – 4500 (60’s)

Roy Orbison’72 – Memphis – London – UK – 3500 (60’s)

Roy Orbison’72 – Sings – London – UK – 3500 (60’s)

Roy Orbison’89 – A Black And White Night Live – Virgin – Italy – 3500 (inner, 60’s)

Roy Orbison’92 – King Of Hearts – Virgin – UK – 4500 (inner, 60’s)