With the recent ton vs tonne debate, here it is: the ultimate gold
coin. 1000Kg of 99.99% pure gold.
1000Kg = 2200 lbs.
2200 lbs. x 16 oz./lb. = 35,200 oz.
Gold is currently $1745 US per oz.
Coin is worth $61,424,000 US
I am sure, since this coin is so large, it is for all practical uses
valueless. So if you Aussie guys are looking to get rid of this
albatross, you may feel free to drop ship it to my house.
Hmmmm......so there is some confusion about how to value this thing
(me not an expert in the gold biz). I tried to tell them Aussies, it's
worthless. Send it to me....right away. I'll even pay shipping.
Yeah, OK, but (obligatory metalworking content) it's just a disk
unless it was shaped by die pressure (coined). So, it's not
really a coin, unless one of those stamp-out-tank-turret
bits of heavy machinery was employed to shape it, against
a carefully sculpted reverse-carved die.
I'm curious as to why, for a 1-off, they went to the trouble & expense
of a steel mould. Why not lost wax, for example? I know it would have
been a challenge supporting it, but wouldn't it have still been
easier/cheaper that that HUGE steel mould?
If the rest of the English speaking world cuts Oz some slack, speaking
Strine will allow you to keep your probationary status as a member of
the English speaking countries. Too many additional funny words for
things, and your probation will be revoked. :)
BTW, I thought a "tinnie" was Strine for a can of beer. I would be
lost in Oz without some quick lessons in the local dialect.
Yep. Tinnie is also used for a beer. True Aussies prefer the beerincans as
its easier to cool down quickly. If you have access to a buld propane truck
a couple of squirts of liquid propane will cool a tinnie, but it will break
Why bother with converting from metric units?
The current price of gold here in UK is £35.835/gm. 1000Kg is
,1000,000gms, so the amount of gold is worth £35,835,000. At the current
exchange rate (today is 4 Dec 2011) that is $55,884,681.77
Mostly because the price of gold as reported on the daily news is
quoted in US dollars per troy ounce.
Maybe some day we'll have to convert from CNY (kuai) per gram, but not
Type in 1000kg in troy oz into Google:
1000 kilograms = 32150.7466 troy oz
Gold price from kitco.com:
US $/troy oz (halfway between bid & ask price) & we get
Google also says from 56128772.4 USD in GBP
35.9869029 million British pounds
That's a really interesting question, but the answer isn't that clear.
"Coin" derives from a word for "wedge," and some sources say that the
earliest stamping dies were wedge-shaped. This is a misreading; the
fact is, the earliest coins were shaped like a bronze ax-head, which
is where the "wedge" comes in.
The next step was flat coins with a stamped image of an ax-head struck
into them. So striking, or stamping, became an accepted part of what a
Today, we have fully integrated the idea of stamping or striking into
our definition of "coin" (the verb), but it is not a necessary part of
"coin" (the noun).
Still, I think that most people would agree with you that this "coin"
is not "coined," so it's not a "coin." Bullion (from "boiling")
generally is just simple cast blocks or sticks, sometimes with a
weight and/or a certifying stamp struck into it. So much of the
bullion in the world is coined. d8-)
(metalworking trivia impulse "off")
The video (as at ) appears to show handwork
stippling, ie stamping small marks into the surface. See particularly
Some pictures selected from slide show at
include: Edge machining with a
The mold blanks:
Re pressure in mold, it would have been ca. 22 psi near most of the
bottom edge of the mold (~ 31.5" diameter * 0.698 pounds/cubic inch)
and ~ 28 psi in the bottom tab extension of the casting.
That's actually a lot. What's the total force trying to push the mold
halves apart? About (22/2)(Pi (31.2/2)^2)= 8,572 pounds, with max force
at bottom and zero force at the top of the sprue.