"The carving ... is an amazing artifact that has been through many changes of fortune in its 140-year lifespan.
"Easily the earliest portrayal of the Queen in Aotearoa New Zealand ... she took a long time in coming and the Parliamentary Library wanted to keep her, but persistence paid off and she was installed in Tamatekapua Meeting House before being moved again in 1900," Mr Stocker said.
The carving was stolen and damaged by Maori activists in the mid-1990s before they returned it about two weeks later without the crown.
Mr Stocker said his research findings would be published as an essay in a Manchester University Press book, New Zealand's Empire, due to be released in 2015.
He said he welcomed the opportunity to take his knowledge back to where it all started and share it with anyone interested.
Ohinemutu kaitiaki (guardian) Shaloh Mitchell said he wanted to restore the carving to its former glory.
Mr Mitchell said ideally he wanted to get a bronze cast made of the bust to be permanently displayed at the marae with the original given to the Rotorua Museum.
He said the last time it was seen in public was at a ceremony for 28th Maori Battalion war hero Haani Manahi when Prince Andrew visited Rotorua in March of 2007.
Since then it has been kept in storage.