Ok, so app SO-383 is Abbey Road. It shouldn't have any mention of 'Her Majesty on the cover or the label. There are several different versions of this, ranging is price from $300-500 in mint condition. Can you post a photo of it? Of course if the signatures are genuine it'll be worth a lot more. However, as it's Abbey Road it's less likely that they're genuine due to the fact that they were never again all in the same place at the same time.
This is also the American pressing, so it's certain that the signatures are fake, I'm afraid. And therefore the album itself is probably worthless, as it's been defaced.