Try eBay, Bias or Whitworths mail order. They will be plastic though. The secondhand marine parts people may have bronze items but there is probably a demand for them as decorative bits.
Muir marine at Manly in Brisbane specialize in bronze fittings.
Call them on (07) 3396 9988 and ask for Jason, Fax 3893 2029, email muirmarine@bigpond.com, web www.muirmarine.com.au
Best of luck. It would be a shame to have to replace with plastic.
Thanks guys I'm certainly not replacing I am after an extra to put on a hatch above engine room aft in our 42 ft ketch to create some flow through ventilation !
Greetings-I am building a small Tugboat and searched extensively for some Dorades to compliment the project.
DeckHardware in Sydney sells the Mainship type,Mcintyre Marine,but have a look at the Vetus catalogue which looks a similar pattern as yours.These are in S/S.I think there were some used bronze ones a while ago at Classic Boat Supplies?.
A word of warning though,hold onto your chair when you receve the price!Cheers C.R.
Maybe one of these will suit, price seems to be affordable .....
www.ahoycaptain.com/dorade_main.html