I have now seen the elephant! Nobody ever pulled this off before, and in silver and gold no less!!
Its historic.
When we are dead and gone, these will be museum pieces.
About casting.............
Yes, according to several I know, silicone molds and injecting hard wax is definitely the way to go.
They also say (and loudly) that you cannot cast work at home with any particle of the speed and accuracy others will, and the price is not that bad either.
When you find the right company to work with.
Pal Hamler sez...... You send in your waxes, they send back the parts, you maybe ream bushing holes a little, minor polishing the flat parts, brush them up, and put them out on the table for sale.
They come back that finished.
Funny story about gold dust. My friend Peter ran the large downtown jewelry store in Merbourne Au for years. The old central downtown location. He worked there for years and finally bought the place when the opportunity came. And then ran it for another 15-20 years.
They were always hyper careful about gold of course. But 15 jeweler benches is a lot.
When he retired and moved to his home studio it was a last minute gamble whether it was worth it to have the store carpets pulled and refined.
The charge for this was substantial whether anything was found or not. It was quite a wager. He almost didn't do it.
But at the last minute he did.
The report came in 2 weeks later, with a check...........
$30,000
yours Scott