In 2012 excavations at the former Mount Roskill Bus Depot circa 1951 for a new Shopping centre uncovered over a dozen Brush D side frames along with a single Brush improved sideframe and remnants of Brush 1200 and Brush 1400 Motor cases.
The side frames are now in MOTAT's possession for research and future Auckland tram restorations with the motor remnants being cared for by the AETCL for possible replication for various projects. It is believed to be the only Brush 1200 and 1400 motors to have survived in New Zealand if not the world.