The Kellys for 1955 does not list a 199 (or back of) at all. However Benjamin Redhouse, house furnisher is listed as 197. Perhaps he had an entrance at 197 as well. Next to that is listed T.R,Clarke & son, wood turners and Ansell & Rogers, sheet metal workers, both at 197½. It looks to me like Ansell & Rogers might be who you are looking for