An eagle-eyed bookshop manager knew there was something special about a tattered book donated to her charity shop. The large book was handed to No8 The Old Bookshop in Downham, and manager Sarah Cox had a hunch that it was a special volume. She therefore decided to apply a little research with the help of her volunteers. Her suspicions were spot-on, and the rare book was sold at a specialist auction on Wednesday for a whopping £4,400 – which will all go to the West Norfolk Deaf Association, the charity behind No8. Staff and volunteers from the charity gathered at the Lynn Deaf Centre on Railwa…