Antiques Roadshow expert Paul Atterbury had to deliver the rather bittersweet news to one guest in north Wales that their items were “financially worthless”. Speaking to a guest at Beaumaris Castle, Atterbury was presented with, what he described as “a pile of frankly scrappy bits of paper” with “densely written with notes”. However, as the owner went on to explain, the notes held quite the backstory. “So what’s all this about?” Atterbury asked to which the guest explained: “Well, 1955, a local guy called Sid Wignall started the Welsh Himalayan Expedition. They went climbing up in the Himalaya…