What a welcome surprise to see this old post revived. Marcus, let me add to the list of guys who wish you a welcome to this site.
You have a "killer" dispenser there. Dick is right, it is European vs. Made in USA, and yours is original, and possible more original than mine. I'm not near mine right now, but the top red portion of mine, might have been touched up? Your's looks correct! Mine also came from Australia several years ago, and I'm feeling very lucky to have it in my collection. I don't know of anyone making reproductions of this dispenser, but I know lots of guys that might tell you that, to get the asking price lower. LOL.
Your dispenser, the memories, and the family connection should make this piece priceless to you.
Welcome to the site, share more of your family petro history with us.
Don "oltoydoc" Sherwood Vintage Gas