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How many silver coins make up an ounce of pure silver ?

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Valued Member
Cyprus
349 Posts
 Posted 09/22/2010  05:14 am Show Profile Bookmark this topic Add Ozzie to your friends list Get a Link to this Message

Hi I was wandering how many coins work out to an ounce (36 grams?) of silver?

Australia 1966 50c-is 80% silver and weighs 13grams. So that is about 3 or 4 coins to the ounce.

Florins?
Threepences?
Sixpences?

Thanks,
Ozzie

Edited by Ozzie
09/22/2010 09:05 am
Pillar of the Community
United States
2104 Posts
 Posted 09/22/2010  05:43 am  Show Profile Bookmark this reply Add chris12018 to your friends list Get a Link to this Reply
1 ounce = 31.1 grams
Pillar of the Community
United Kingdom
555 Posts
 Posted 09/22/2010  05:48 am  Show Profile Bookmark this reply Add valdiman to your friends list Get a Link to this Reply
10.4g of pure silver.3 coins for 1oz roughly.
Pillar of the Community
Australia
8864 Posts
 Posted 09/22/2010  07:24 am  Show Profile Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
For ANY silver coin: Multiply the total weight in grammes by the fineness, divide by 31.1036 and get the inverse of that.

The result is the number of silver coins needed to make up one troy ounce of fine silver.

Just remember that up to 5% of a coin's weight can be worn away, for larger coins the %age is less.
Edited by sel_69l
09/22/2010 07:24 am
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Australia
11222 Posts
 Posted 09/22/2010  08:57 am  Show Profile Bookmark this reply Add Sap to your friends list Get a Link to this Reply
The amount of silver in predecimal coins is directly proportional: that means there's exactly twice as much silver in a sixpence as there is in a threepence, and so forth. That keeps the conversions between denominatons simple, allows you to "mix-n-match" denominations as you need to, and lets you work it out based on a "face value" in pence per ounce.

For sterling coins (pre 1947): about 71 pence per troy ounce. Three florins, or 6 shillings, or 12 zacs, or 24 treys, will all give you a shave over an ounce of silver. If you've got crowns, they're 60/71th of an ounce; a crown plus a shilling is a bit more than an ounce, or six crowns is roughly 5 ounces.

For .500 fine coins (1947-64): about 132 pence per troy ounce. Five and a half florins, 11 shillings, 22 zacs or 44 treys.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
Valued Member
Cyprus
349 Posts
 Posted 09/22/2010  09:11 am  Show Profile Bookmark this reply Add Ozzie to your friends list Get a Link to this Reply
Thanks SAP and others. It's a lot clearer now.
Pillar of the Community
Australia
1291 Posts
 Posted 09/22/2010  8:11 pm  Show Profile Check markn's eBay Listings Bookmark this reply Add markn to your friends list Get a Link to this Reply
Or you could just use the nifty calculator I programmed:

http://www.australian-threepence.co...n-values.htm
Pillar of the Community
United States
2621 Posts
 Posted 09/22/2010  8:24 pm  Show Profile Bookmark this reply Add DNA to your friends list Get a Link to this Reply
Thank you for your coin calculators, markn.

I use them all the time.

You can calculate multiple denominations at once, unlike many other online calculators.

It makes it super easy to see the melt value of US/Canada Sets.
GO: (Coin Collecting is) the only hobby that when you are broke you still have money.

DNA: "When you pay with cash, you KNOW when you're broke."

markn's US Silver Coin Melt Value Calculator
Pillar of the Community
Australia
1291 Posts
 Posted 09/23/2010  01:57 am  Show Profile Check markn's eBay Listings Bookmark this reply Add markn to your friends list Get a Link to this Reply
Thanks DNA, I've learned a lot since then I've been wanting to improve them but time hasn't allowed for it. I'm wanting to improve the speed of them and allow for you to save your data (so you can check the bullion value of a hoard over time). Maybe I'll find some time soon.
Valued Member
Cyprus
349 Posts
 Posted 09/23/2010  05:46 am  Show Profile Bookmark this reply Add Ozzie to your friends list Get a Link to this Reply
Wow..thats a really handy calculator. Thanks
Valued Member
United States
364 Posts
 Posted 09/23/2010  08:09 am  Show Profile Bookmark this reply Add TenSense to your friends list Get a Link to this Reply
Park the calculations in an excel sheet. It makes life easier.
Valued Member
Cyprus
349 Posts
 Posted 09/23/2010  09:42 am  Show Profile Bookmark this reply Add Ozzie to your friends list Get a Link to this Reply
where can I get an excel sheet like this?
New Member
United States
17 Posts
 Posted 10/09/2010  02:33 am  Show Profile Bookmark this reply Add galen59 to your friends list Get a Link to this Reply
You really have to make a Mexican calculator... Please..
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