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What Is The King Of Key Dates?

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Bedrock of the Community
United States
17884 Posts
 Posted 03/21/2018  5:05 pm  Show Profile   Bookmark this reply Add Conder101 to your friends list

Quote:
and the $50 half union gold pattern.


Patterns, there are two of them and they are different from each other.
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2216 Posts
 Posted 03/21/2018  6:58 pm  Show Profile   Bookmark this reply Add jpsned to your friends list
I defer to what the ad in the comic books told me back in the late 1960s: 1804 silver dollar.

Runners-up: 1913 Liberty head nickel, 1894-S dime
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United States
189767 Posts
 Posted 03/22/2018  08:46 am  Show Profile   Bookmark this reply Add jbuck to your friends list

Quote:
I defer to what the ad in the comic books told me back in the late 1960s: 1804 silver dollar.
Sounds like your sentimental favourite.
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United States
1533 Posts
 Posted 03/22/2018  09:50 am  Show Profile   Bookmark this reply Add Andrew99 to your friends list
What are the criteria for being King?

I consider it a coin without which you cannot collect the series. The shorter the series, the more this becomes an issue. So the 1916 Standing Liberty quarter, and the 1918/7 are keys, there are short sets or subsets that can exclude them. There are keys in the Walking Liberty series as well, but you can do 1941-1947 short set. You can do 1941-1945 short set in Mercury dimes and skip the keys.

You can't do this with the 20c pieces. The 1876-CC makes the whole series uncollectable. That, I think is the King of keys. It kills the collectability of the entire denomination.
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5464 Posts
 Posted 05/09/2020  8:58 pm  Show Profile   Bookmark this reply Add USSID18 to your friends list

What-Is-The-King-Of-Key-Dates?
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3486 Posts
 Posted 05/09/2020  9:33 pm  Show Profile   Bookmark this reply Add matthewvincent to your friends list
"What are the criteria for being King?"

For me, a "set" consists of one each of "regularly issued for circulation" coins.
And once found in circulation.
(The 1894-S "Ice Cream Dime," found in circulation, doesn't count.
It was not a regularly issued coin.)
No proofs, no patterns, no non-sense!

Thus, the 1909-S VDB Cent, 1913-S Type Two Nickel, 1916-D Mercury dime, etc.
All are available for a price and needed for a complete set by my definition.

"The collection is in your mind. Dispose of your albums and free your mind from the tyranny of holes."
Amen, Amen, AMEN!

Edited by matthewvincent
05/09/2020 9:37 pm
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7293 Posts
 Posted 05/09/2020  10:02 pm  Show Profile   Bookmark this reply Add hfjacinto to your friends list
I currently have a few sets and have the key dates of:
1909S VDB for Lincoln Cents
1877 for Indian Head cents
1916 D for Mercury dimes
1885/1886 Liberty nickel
1921 Walker
1928 Peace dollar
1913 S for Bison Nickels
1858 Canadian Large cent

Nothing was really hard to find, the biggest issue was cost. But they are available.

Of the sets that I wanted only the Standing Liberty is beyond what I want to pay, so I guess the 1916 standing liberty is the key I won't get.
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 Posted 05/09/2020  11:38 pm  Show Profile   Bookmark this reply Add Princetane to your friends list
In New Zealand we have 2 big Key dates

1935 Threepence - Just 40,364 minted and the most scarce of all the circulating coins.


What-Is-The-King-Of-Key-Dates?
Not my coin and not my image

1935 Waitangi Crown - Just 1,128 minted and sold at 7/6 ensuring these coins were never hits with the public. 364 Proof coins and 764 standard uncirculated issue coins.


What-Is-The-King-Of-Key-Dates?
Not my image from Pinterest - Standard finish 764 coins


What-Is-The-King-Of-Key-Dates?
Proof coin (Image stolen off net and slightly modified) 364 minted.

Let me reiterate I DO NOT OWN any of these coins.

The costs are (NZD$) 1935 Crowns - VF $5k, EF $6k, UNC $8k, Proof - $10 - $15k (And rest of set $2 - $4k more)

1935 3d - VG $200, VF $500, EF $1k, UNC $2k, Proof $2k
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 Posted 05/09/2020  11:52 pm  Show Profile   Bookmark this reply Add Princetane to your friends list
Some British Key dates of Post 1816 coins

Halfcrowns - 1839, 1841, 1851,53,64 (These 3 dates are Proofs and essays), 1905, 1952 (6 essays only)
Florins - 1848 Godless Pattern, 1850 Gothic, 1856,
Pennies - 1933
Any coin with Edward VIII (British proofs and essays only)

Australian - 1855 Type 1 Sydney Half Sovereigns
1852 Adelaide GOLD pound coins
1893M Half sovereign

1853 Sydney Sovereign (1 pattern)
1855/6 as above, scarce to VF, rare above EF

Halfpennies
1916M mule which has Indian KGV reverse
1923

Pennies
1920 No dots
1930
1937 with Kangaroo obverse

3D

1922/21 Overdate
1937 Wheat Sheaf reverse

6d - 1918

1/-
1915 and 1915H
1921
1920 and 1937 Patterns (Latter has Sheep's head reverse)
1933

Florins (Lots of rare dates here)
1914H
1915
1915H
1920 Pattern
1932 (A Huge key and a coin that is heavily faked, mostly 1933 - 36 Florins with last number taken off and a 2 added from a common date 1920s Florin like 1922,25,26)

1937 Patterns

In 1937 new designs were planned for all coins but the 6d, yet they were not implemented until 1938 (1939 for the Halfpenny) - 1937 Patterns exist are extremely rare (Like 6 figures each)

Crown - 1937 Uniface strike

Proofs of the 1927 Canberra, 1934 Victoria, 1951 AUSTRALIA, 1954 Royal Visit Florins and 1937 Crown are all super rare (5 figures and more)

Information from Greg McDonald Catalogue for Australia.
16th edition 2009

Edited by Princetane
05/09/2020 11:55 pm
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United States
9395 Posts
 Posted 05/10/2020  02:32 am  Show Profile   Bookmark this reply Add pepactonius to your friends list
Some rare key dates for US coins:

- 1895 dollar (business strike)
- 1873-S dollar (seated)
- 1841-O $5.00 (reported by Breen)
- 1870-S $3.00
- 1797 $5.00 (15 stars)
- 1797 $5.00 (16 stars)
- 1825/4 $5.00
- 1822 $5.00
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 Posted 05/10/2020  4:07 pm  Show Profile   Bookmark this reply Add USSID18 to your friends list
I looked, couldn't find it unless I'm missing it. I'm not a professional numismatist, just a hobbyist. What constitutes a key date, mintage?
Bedrock of the Community
United States
17884 Posts
 Posted 05/10/2020  7:11 pm  Show Profile   Bookmark this reply Add Conder101 to your friends list

Quote:
Some rare key dates for US coins:

- 1895 dollar (business strike)
- 1873-S dollar (seated)
- 1841-O $5.00 (reported by Breen)
- 1870-S $3.00
- 1797 $5.00 (15 stars)
- 1797 $5.00 (16 stars)
- 1825/4 $5.00
- 1822 $5.00


I want to know where the 1870 S quarter is.


Quote:
I looked, couldn't find it unless I'm missing it. I'm not a professional numismatist, just a hobbyist. What constitutes a key date, mintage?

That tends to be part of the problem. We don't have a good definition of exactly what a "ke" or "semi-key" date is. Without that it is then hard to declare what is the "King key date.
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 Posted 05/10/2020  8:46 pm  Show Profile   Bookmark this reply Add USSID18 to your friends list

Quote:
That tends to be part of the problem. We don't have a good definition of exactly what a "ke" or "semi-key" date is. Without that it is then hard to declare what is the "King key date.


I guess all my key dates are the ones I don't have.
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4628 Posts
 Posted 05/10/2020  9:08 pm  Show Profile   Bookmark this reply Add Princetane to your friends list
My definition of a Key date is

In a series of coins and types (Like Mercury dimes, Walker Dollars, New Zealand Threepences, British pennies etc), a key date is usually the rarest one that is not a proof only/essay or pattern. Basically the date that circulated with the lowest number minted for that year (Or Mintmark in many cases) that is available to general collectors.

Good example, a 1933 Penny is not a key date as it was not really available but a 1951 Penny is - a 1913 V nickel is not a Key date, but an 1883 one is. For me my key dates for UK Halfcrowns would be 1905 as only 188k were minted and you can find them - but a 1952 Halfcrown is not, as only 6 exist and they are all patterns that never circulated and most would be privately owned by mints or museums.

A semi key is like the next 2 or 3 coins - sometimes you have a key date from only 4 different dates/mints of a coin like say an 1868 US 2 cent piece. On the other hand some series with hundreds of dates/mint tyoes/varieties may only have 1 or 2 keys.
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 Posted 05/10/2020  9:15 pm  Show Profile   Bookmark this reply Add Princetane to your friends list
Hypothetical example:

A coin worth 5 wotzits was minted between 1908 and 1925. Here are the mintages
of it for each year. The size and shape of the coin each year was the same. There was one mint and the ruler and metal remained the same.

1908 - 4 million
1909 - 3.5 million
1910 - 250,000
1911 - 17 million
1912 - 98 million
1913 - 4,250
1914 - 12 million
1915 - 8 million
1916 - 154 million
1917 - 980,000
1920 - 4 million
1921 - 32 million
1923 - 75 million
1924 - 2 known
1925 - 198 million

In that list its obvious you have some very common years and some not so common

The key date there is clearly 1913
The semi keys are 1910 and to a lesser degree 1917
1908, 09 and 1920 would be scarce dates, but not keys in any sense

1924 is not a key date as its obvious it was probably an essay or a pattern
and with only 2 available - its unilkely you can ever buy one, unless you rob a
bank or the mint sells it to you. On the other hand, a 1913 coin you could buy
quite easily for the right amount of cash.
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