Crikey, Codex you set the Cat amongst the pigeons ! :)
Precis:
1. Both Gabanintha and (close by) Naneen, are Ghost towns
2. Gabanintha was a gold mining town
3. Gabanintha held "The Mountain View" Gold Mine lease ...(not sure here, maybe a copper mine)
4. In the newspaper 1911 The Mountain View
Gold mine, lists "GABANINTRA"
5. If, Gabanintra had Post Office facilities, then you would have the ONLY postmark in history :)
Your postmark does look like GABANINTRA but I am sure we are mis reading Gabanintha :) (Aboriginal name, meaning unknown)
Both your postmarks are nice SON "socked on the nose"
My job here is done, I can no longer assist
You need to enquire to the Western Australian Philatelic Society
Request assistance with current scarcity and approx value.
I am sure some members would welcome your scan
If you do, please ask what the 8d (eight pence) stamp would cover?
Parcel? registration etc, seems a high value
Please post back.
http://www.p-s-w-a.com/Cautionary advice: Scarcity does not always translate to Valuable in $ terms :)
certainly in study terms.