Mispressings and printing errors

I own two strange Queen items.
One is a "A Night At The Opera" CD, EMI CDP 7 46207 2. It contains light opera not Queen.
Two is 7inch vinyl of Soul Brother where the track is actually printed on the label as "Soul Bother".
Do these items have any value or are they just curiosity value?

I have the "Soul Bhother" one too. I don't think it's worth too much, as they made quite a lot of them.

^ Correct pressings and spellings are more of a rarity these days. : )