This is a beautiful early wooden GPO desk telephone bell set. This is being offered for sale as an option if purchased with a candlestick telephone only. See the candlestick telephone for sale. No Key supplied or needed as unlocked. This bell set is an option in place of the one supplied. It will have a shorter four way braided cord to the GPO black Bakelite connection block, with line in cord and two way braided cord to the bell box, in place of the single long four way cord. Please note the left bell top nut has been replaced with a non matching one. Parts simply are not available and so this was all that was available.