The National Gallery of Australia in Canberra purchased six Bini/Edo items and one ‘Bronze had in the Udo style’  in 1973, some with interesting provenance.
Some of these used to be on display but are probably in store. At the time writing (April 2020) of this is irrelevant because the NGA is closed because of COVID-19.

One of the best items (with photos online) is
‘Bini or Edo people, Royal Court of Benin
Northern Niger Delta, Kingdom of Benin’
Portuguese soldier, firing a gun mid-18th century
https://artsearch.nga.gov.au/detail.cfm?irn=44148 

Asking NGA staff about a ‘Benin bronze’ will not help.