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Key And Semi-Key Confusion!

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BH1964's Avatar
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 Posted 07/09/2019  7:59 pm  Show Profile   Check BH1964's eBay Listings Bookmark this reply Add BH1964 to your friends list Get a Link to this Reply
I always considered the '09-S VDB, '09-S, '14-D & '31-S as keys but understand picking the big dog as the key and the others as semi-keys.
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llewellin's Avatar
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 Posted 07/09/2019  8:08 pm  Show Profile   Bookmark this reply Add llewellin to your friends list Get a Link to this Reply
I never considered that there in essence should be only one "key" coin for a set but it makes sense when you look at the origin of the term. I don't think a coin's status as key or semi-key should depend upon condition - it should be key/semi key across all grades. Otherwise it is a conditional rarity.
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Coinfrog's Avatar
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 Posted 07/09/2019  8:08 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Sir Derrin - I was just a kid. Much older now, and while I don't collect Lincolns, it is clear that the keys in, say, Fine are much different than the keys in 65. Probably true of many series.
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Earle42's Avatar
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 Posted 07/09/2019  8:10 pm  Show Profile   Bookmark this reply Add Earle42 to your friends list Get a Link to this Reply

Quote:
Not sure there are any "long established" guidelines for any series

Rather than get caught up in semantics (as iffy as grades given on slabbed coins), I just always thought it was obvious...

Keys: The one hardest piece to obtain. Hence these coins are called the key to completing the series. Each set has a coin listed consistently the most desirable/expensive by the general masses over the past umpteen years.

Semi Keys:
The expensive ones below the key. "Expensive" referring to a cost that does not include people who have large coin budgets.

Low mintages generally tie into both terms, but there are exceptions like the Jefferson 50-D. These nickels were so hoarded, and so many remain in high grade it never was difficult to get a nice one.
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Coinfrog's Avatar
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 Posted 07/09/2019  8:26 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Agree that the "keys" are usually considered the lowest-mintage coins that are commonly available in circulated condition. I would disagree with jbuck that there is only one key per series. How about Washington quarters or Barber quarters for a start?
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Sir Derrin's Avatar
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 Posted 07/09/2019  8:27 pm  Show Profile   Bookmark this reply Add Sir Derrin to your friends list Get a Link to this Reply
llewellin - I agree

Coinfrog - agreed but as llewellin stated that is being pretty conditional..

I go based on mintage and survival rates (just how hard it is to get)rest is gravy...

It will always be a matter of opinion as we can see by this thread lol





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 Posted 07/09/2019  8:51 pm  Show Profile   Bookmark this reply Add basebal21 to your friends list Get a Link to this Reply
There's not really a hard fast rule. As mentioned a couple series have more than one coin that is a clear key. I would say though that there shouldn't be more than a handful of semi keys at best since at some point you just have to say the series is just an expensive series like Seated dollars instead of saying half the series is a semi key.

I do agree most people will probably just go off price, but ironically for some things like the 1909 S VDB and 16-D Dime even though they're the most expensive overall I wouldn't even consider them a semi key based on availability
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Coinfrog's Avatar
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 Posted 07/09/2019  9:01 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
The term is vague and always will be, I think. Probably why it has survived.
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basebal21's Avatar
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 Posted 07/09/2019  9:12 pm  Show Profile   Bookmark this reply Add basebal21 to your friends list Get a Link to this Reply
I would strongly suspect dealer marketing plays a huge role in what we consider to fit the terms and why they became mainstream
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Spence's Avatar
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 Posted 07/09/2019  9:28 pm  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply
In looking for prior threads on this topic, I stumbled across a series of statistically-based diagnoses on this subject by our @drdave:

1. Indian Heads: http://goccf.com/t/89040
2. Lincolns: http://goccf.com/t/88992
3. Buffs: http://goccf.com/t/89054
4. Jeffs: http://goccf.com/t/89019
5. SLQs: http://goccf.com/t/89075
6. Walkers: http://goccf.com/t/89049
7. Morgans: http://goccf.com/t/89072

You may or may not agree with the importance of this work, but I think that it makes for interesting reading nonetheless...
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KenKat's Avatar
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 Posted 07/09/2019  9:32 pm  Show Profile   Bookmark this reply Add KenKat to your friends list Get a Link to this Reply
I'm with the Frog and BH on this one when it comes to Lincoln's - 09-S, 09-S VDB, 14-D and 31-S are the keys to me. Even though in higher grades. there are harder date/mint marks than those 4.
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joecoin's Avatar
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 Posted 07/10/2019  08:03 am  Show Profile   Bookmark this reply Add joecoin to your friends list Get a Link to this Reply

Quote:
As mentioned a couple series have more than one coin that is a clear key. I would say though that there shouldn't be more than a handful of semi keys at best since at some point you just have to say the series is just an expensive series like Seated dollars instead of saying half the series is a semi key.



Agreed. Conversely, you could say there are series that have no key rarities (modern clad stuff?) where all the coins are inexpensive.

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Coinfrog's Avatar
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 Posted 07/10/2019  08:48 am  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
This has been a good discussion!
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 Posted 07/10/2019  09:19 am  Show Profile   Bookmark this reply Add just carl to your friends list Get a Link to this Reply
To me it's simple. If you need a coin and have a heck of time finding one, it's a key date. If you need a coin and can find one rather easily, it's only a simi key date. If you need a coin and really just can't find it, it's rare.
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 Posted 07/10/2019  2:50 pm  Show Profile   Bookmark this reply Add Andrew99 to your friends list Get a Link to this Reply
There is no standard definition and its use depends on the series. In Mercs, the 16-D is the key date. Everything else is either semi-key or commons. In Buffalo nickels, its not at all clear as there are no standouts. In Walkers, Key Dates are all the coins dated 21. Everything else is semi-key or common.
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