Hi, this is my first post here. I hope I'm posting in the correct place. 

I was advised to come to this forum to ask about the authenticity of a few purchases I made. The first one I'd like to ask about is the lamb lies down on Broadway album by Genesis signed by all the members. When I look at pictures of Genesis signed albums from other auctions, they seem to look like they have the same kind of curves and unique signature aspects. But I'm new to this and I'm hoping one of you may be able to advise. 

I purchased this from crossroads collectibles. While it wasn't dirt cheap, I'm a little concerned whether this was too cheap to be real or not. It's sort of in that middle ground for a band that I don't think is as popular anymore, so maybe it's an acceptable price but I really don't know. As I said, I see some of the unique curves and lines that appear to mimic or be similar to what I've seen on other sold Genesis signed items. So I'm hoping that is encouraging, but I'd like your advice please. 

Here are photos of the album. If I need to take different photos something more zoomed in to help get input please just let me know. 

Thank you very much in advance for any help.