No Quarter for these quarters. . . (p1) - Clipped Planchet, Legit? 1 1

[cobymordet]

Found this bad boy and I think it is authentic, but a more experienced set of eyes would be gladly appreciated.

[cobymordet]

[Mr.Bill347]

It been clipped alright, but not by the mint but though some dubious methods like lineman’s pliers.

[Coinbuf]

Actually, this looks like a legit straight clip, the opposing side shows a clear Blakesley effect and there is the proper tapering of the rim next to the clip.

Edited September 5, 2023 by Coinbuf

[cobymordet]

I briefly read about the Blakesley effect, but was unsure whether this coin met that criteria.

[Greenstang]

Agree with Coinbuf, legitimate clip, the way the letters fall off and the dovetail rim indicate it’s real.

[Coinbuf]

On 9/5/2023 at 4:25 PM, cobymordet said:

I briefly read about the Blakesley effect, but was unsure whether this coin met that criteria.

 the Blakesley is not required for a straight clip because a straight clip happens when the blank is punched rather than in the press.   But I have seen some straight clips with the Blakesley effect, I assume it happens when the coin is struck because of the blank not being round.   But I am not an expert on this area or effect and I may be wrong on that.

[Just Bob]

On 9/5/2023 at 6:28 PM, Coinbuf said:

 the Blakesley is not required for a straight clip because a straight clip happens when the blank is punched rather than in the press.   But I have seen some straight clips with the Blakesley effect, I assume it happens when the coin is struck because of the blank not being round.   But I am not an expert on this area or effect and I may be wrong on that.

It is my understanding that the Blakesley Effect is caused during the raising of the proto-rim in the upsetting mill. The blank is forced into an increasingly smaller space between a stationary die and a roller, which squeezes the edge into a raised rim. If the blank has a missing area on the edge, there is no "resistance" for the die to push against, so no rim is formed. (Hard to describe or imagine if you don't know what the upsetting mill looks like.)

Here is a screen shot of a still from the US mint's video about planchet formation. You can see pressure being applied to the planchet from the sides to form the rim.

 

[EagleRJO]

I agree with Bob that the effect should be present even for straight clips as it occurs at the upsetting machine from a lack of pressure on opposite sides, which occurs for both curved and straight clips.

I also see the other classic indicators like metal flow and rim taper at the clip as noted.  See a Coin Week article from a while ago linked below.

I think Bob's screenshot is of a vid on the mint's website on "Coin Production", which has some good info and vids linked below for anyone interested.

https://www.coinworld.com/news/us-coins/how-to-identify-a-genuine-clip-coin--collectors--clearinghouse.html

https://www.usmint.gov/learn/production-process/coin-production

[powermad5000]

I also concur that this is a legit straight clip. I see the effect on both sides of the coin which is how this large of a straight clip should look after striking. There is weakness of the A in AMERICA on the reverse, and the N of IN and T of Trust on the obverse. The rest of the details "fall off' as would without the metal or pressure to strike them.

[Mr.Bill347]

I stand corrected! Or sit corrected? Learned again from you masters! I’ve not seen a straight clip like this and learned about the Blakesly effect.

thanks guys!