Negative No. N308 and black and white print made by a laser printer (stored in folder ) of the drivers cabin and destination box of W6 988 showing the "new type of carbon skid collector" on the trolley pole. This type of collector was to replace the trolley wheels used in Melbourne at the time. Was introduced into the Bourke St. route. Destination blind not fitted to box at time of photograph. Date of photo 19/6/1955. Negative scanned hi res and imaged updated 21/5/2020.trams, tramways, melbourne, bourke st., trolley poles, skid collector, tram w6 988