Ripped these from one of the B&W poster box sets. I’m new to this kindof so could I have some help.

I know the first one is very valuable but I'm not sure what it might be exactly. Should I send it of to get graded with PSA? I'm in the UK btw. I have ordered some top loaders aswell to keep it safe. Anyone who knows how to check prices properly could you tell me the market price please?