We believe that the bread knife we have was made in Sheffield (maker unknown) for Kay's of Worcester, the famous mail-order company. The full name of the company was Kay & Co Ltd but the name was usually abbreviated to Kay's, as can be seen on the image of the clock.More information on the history of the company can be found at https://kaysheritage.org.uk/history/If you have any more information about the knife or the maker, please share it with us via enquiries@hawleytoolcollection.com ....