Want the assorted unknown items listed? I've got almost all of them now (just missing the Moxie skillbook).
And, as of now, it's just Grey, Red, Blue or Black text messages, depending on if you have the Soul Monocle equipped and how much of the puzzle you've unlocked.
Edit: Items (aside from used versions of skillbooks + Moxie skillbook)
Looking at item #5971...
Unknown item found: record of infuriating silence (5971, 211644183)
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5971 record of infuriating silence 211644183 record.gif usable t 0
# record of infuriating silence
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Looking at item #5970...
Unknown item found: soul mask (5970, 799134456)
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5970 soul mask 799134456 soulmask.gif accessory t 0
soul mask 0 none
# soul mask: Changes Your Avatar
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Looking at item #5969...
Unknown item found: soul knife (5969, 244431022)
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5969 soul knife 244431022 soulknife.gif weapon t 0
soul knife 100 Mus: 0 1-handed knife
# soul knife: Can harm True Mimes
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Looking at item #5968...
Unknown item found: soul coin (5968, 381312268)
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5968 soul coin 381312268 soulcoin.gif none t 0
# soul coin
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Looking at item #5967...
Unknown item found: soul doorbell (5967, 498403310)
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5967 soul doorbell 498403310 souldoorbell.gif usable t 0
# soul doorbell
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Looking at item #5966...
Unknown item found: soul monocle (5966, 744020398)
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5966 soul monocle 744020398 soulmonocle.gif accessory 0
soul monocle 0 none
# soul monocle: Reveals secrets
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Looking at item #5973...
Unknown item found: record of tranquil silence (5973, 722978031)
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5973 record of tranquil silence 722978031 record.gif usable t 0
# record of tranquil silence
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Soul Mask's "changes your avatar" enchant makes you look like a Four-shadowed Mime.
The three records are usable; they grant skills (not auto-permed) and a (used) skillbook. Once I get the Moxie one, I'll update/add another post.