| Author |
 Replies: 14 / Views: 1,945 |
|
|
Pillar of the Community
United States
2669 Posts |
Hard to catch the edge details on this tiny coin so I tried to do it with lighting. My first impression was that it was a cap for a short time. The edge is raised on opposite sides of the coin, it's not uniform all the way around. Any other thoughts?  |
|
|
|
Valued Member
United States
199 Posts |
What is the denomination and year?
|
|
Pillar of the Community
 United States
2669 Posts |
It's a 1970 Mexico 1 Centavo.
|
|
Bedrock of the Community
United States
10045 Posts |
Hmm...it does appear the coin partially wrapped around the hammer die (I'm just assuming this side is) Or perhaps the collar wasn't working right?  I'm wondering what others think.  |
|
Pillar of the Community
United States
2669 Posts |
Here's the reverse. The edge on one side is slightly rounded. I'll put in a normal edge 1972 after for comparison (was taking pictures of it anyway because it's a 1972/2).  1972 for edge compare:  |
|
Bedrock of the Community
United States
10045 Posts |
Oh man...now I see you were talking about the 1972/2. Yeah--something sure is going on there. For starters, there's a different baseline to each digit--did they punch those numerals by hand? I see something N. of the 2--it could easily be an RPD by the looks of it. Update: I see that Krause lists a 1972/2  Edited by DVCollector
01/11/2014 4:42 pm
|
|
Pillar of the Community
United States
2669 Posts |
Yep  So with the rounding of the reverse of the 1970, does that lean more toward the 1970 being a die cap or to something else? |
|
Bedrock of the Community
United States
10045 Posts |
I see what you're saying--it does look like metal flow around the die rounded off the rim. Does that explain the indistinct wheat ear too? Wouldn't it take multiple strikes to push the metal around--any doubling anywhere? I don't know much about strike errors...hope the experts chime in. |
|
Pillar of the Community
United States
1666 Posts |
Possibly just some extra space between planchet and collar?
|
|
Pillar of the Community
United States
2669 Posts |
Just an observation, but from the obverse, the coin does not appear to have circulated enough to cause as much "indistinct-ness" that is seen on the reverse. (And I usually get the obverse/reverse of these wrong - the national arms and eagle is the obverse.. fixed above).
The only place I see any potential doubling is on the dot after the C on the reverse, but that could also be a hit.
Numismat - I don't know - it's probably possible.
I don't think many experts wander into the World forum often.
|
|
Pillar of the Community
United States
2734 Posts |
Given that there's a rounded shoulder opposite the vertical flange, this is almost certainly a stiff collar error. The planchet was inserted just slightly off-center so that the right side rested on top of the collar (or the beveled entrance to the collar). The collar itself was locked in the "up" position. When the hammer (obverse) die descended, it forced the planchet all the way into the collar, warping the edge of the reverse face and pushing up metal on the edge of the obverse face. There's more information at this link: http://error-ref.com/stiff-collar-strike.htmlError coin writer and researcher.
|
|
Pillar of the Community
United States
2669 Posts |
Thanks, Mike - I've never heard of this type of error, that's pretty cool  |
|
Bedrock of the Community
United States
10045 Posts |
Wow--cool! It's great to get more educated. After going to the site linked above, I think I may have a "stiff collar strike" on a Canadian cent.  Edited by DVCollector
01/13/2014 03:40 am
|
|
Pillar of the Community
United States
2734 Posts |
The 1981 cent -- an uncentered broadstrike -- was struck against a stiff collar. Many off-center and broadstruck Canadian cents show this effect. Some press models/brands are simply designed with a less giving collar. So it wouldn't be an error per se. You could call it a "stiff collar effect" rather than a "stiff collar error". The Schuler presses currently used at the U.S. Mint also have stiff collars, producing the same effect as seen here.
Error coin writer and researcher.
|
|
Bedrock of the Community
United States
10045 Posts |
Mike, thank you for your expertise! |
| |
Replies: 14 / Views: 1,945 |
|
Posted 01/11/2014 12:48 am
