Dating Old Brunei Town

I bought this photograph of old Brunei Town on ebay a few weeks ago. It was actually sent by someone called Philip to an Elsie congratulating her on being a permanent staff. It's a set of two photographs.This photograph is that of the late 1950s. I can confirm it by the date of the note at the back of the photograph. But one way you can tell is to look at the photograph itself. Look at what I