Dear friends,

I come to you seeking help in authenticating the signatures on a Led Zeppelin 7'' record I purchased in Japan yesterday. Allegedly, it is signed by Robert Plant, Jimmy Page, John Paul Jones, John Bonham. The seller claims that its provenance is 'From an in-person autograph collector. Based out of Netherlands/Europe, the collection stems from someone who collected autographs from 1953-2010.' According to the Google translation of Japanese text, he also adds that 'Ten years ago, I was asked by a German collection expert whom I met while studying abroad to sell my first autographed collection in Japan. ' Please see the image below.

Looking forward to your expertise and advice. I would really appreciate if you could share your opinions with me as quickly as possible. I won this item on Japan's Yahoo Auction but have not paid for it yet (the platform allows a few days for making the payment). From the same seller, I also won bids for 7'' or 12'' records signed by members of Pink Floyd, Queen, and The Rolling Stones. As you can image, these are not the cheapest items, so your advice could save me a little fortune.

Thank you in advance for your support.