Machine Doubling on steroids

BNick33

Show your coin(s) with the greatest machine doubling.

Russell12

Must be a bad batch of steroids

jacrispies

OP: the Indian head cent has what is mostly "Longacre doubling" which is an effect of the hubbing processes of the design in that time period.

Here is a radical case of machine doubling (not double striking), also known on the classic series as "double profile":

Discussed here with more examples:
https://forums.collectors.com/discussion/1111641/pcgs-mistake-1812-50c-not-double-struck#latest

BNick33

@jacrispies Thank you for the help. I think it's cool looking. Does the longacre doubling reduce the value of the coin. I know it's not a high grade coin but it does have the artist's initial L.

BNick33

Added for reference

https://www.error-ref.com/longacre-s-doubling/

habaraca

Ex Peterson 1813 107a
Reverse has no doubling

rmpsrpms

Here are some views of a 1957-D Cent with MD, made more interesting by a large die chip that is also affected by the MD. Note the MM is not affected:

ColoradoCoinGuy

@rmpsrpms WOW, that is some outstanding low angle zoom photography.

MasonG

BNick33

@rmpsrpms

That 9 die chip must have been popular in the late '50s

Peasantry

@rmpsrpms said:
Here are some views of a 1957-D Cent with MD, made more interesting by a large die chip that is also affected by the MD. Note the MM is not affected:

Incredible shots. Straight on photos leave you guessing sometimes.

TPring

QE II appears to be two-faced.

Walkerguy21D

lkenefic

Greg... you beat me to it! But if I'm not mistaken, I think the 1834 N-1 is "hub" doubling and not technically "machine doubling"... here's the one in my collection:

pursuitofliberty

Another case of "shift" doubling from the Capped Bust Half Dollar series. Not as dramatic as a couple of the others posted here, but definitely has the "doubling" at the mouth, chin and nose.

The coin also has some noticeable clash marks that add to her character.

.
1813 O-108a PCGS 55cac, ex-Long

BNick33

@pursuitofliberty said:

The coin also has some noticeable clash marks that add to her character

124Spider

lilolme

@pursuitofliberty The lines on the obverse center of Liberty are those from a clash of the shield and more specifically the horizontal ones (upper neck and jaw area). This is what I remember seeing before and thought a shield clash.

Edit - found it. I have thought this one was kind of interesting.
https://www.ngccoin.com/news/article/5688/Double-Dies-vs-Machine-Doubling/

jfriedm56

pursuitofliberty

@lilolme said:
@pursuitofliberty The lines on the obverse center of Liberty are those from a clash of the shield and more specifically the horizontal ones (upper neck and jaw area). This is what I remember seeing before and thought a shield clash.

>

First, that's a great example of both a doubled die and machine doubling from a more modern coin. At least I THINK that's what it is. Trying to think through the process that creates that one.

Remember CBH's are a little different as they were struck without a collar on a screw press using hand made dies, so the type of striking "errors" are different.

As far as the clashes on mine go;

Shield from Reverse Eagle's Breast on neck and over Ear
Eagle Feathers in the left Obverse field in front of Chin and Neck
Scroll and first U of UNUM below Bust, most noticeable just above 8 in Date

There's also some clash marks on the Reverse but they're not as dramatic, and there are also a few cracks on the Obverse.

anablep

@rmpsrpms said:
Here are some views of a 1957-D Cent with MD, made more interesting by a large die chip that is also affected by the MD. Note the MM is not affected:

I’ve seen LiDAR images not nearly as amazing as these topographic images of the date on this coin. Well done!

lilolme

@pursuitofliberty said:

@lilolme said:
@pursuitofliberty The lines on the obverse center of Liberty are those from a clash of the shield and more specifically the horizontal ones (upper neck and jaw area). This is what I remember seeing before and thought a shield clash.

As far as the clashes on mine go;

Shield from Reverse Eagle's Breast on neck and over Ear

.
Been out a couple days but back to it now. Thanks, I was fairly certain of the shield clash on the neck. Must of had a miscommunication before. This brings me back to wondering how such a strong clash occurs in the depths of the recess of the obverse die device (Liberty that is). Perhaps an elevation profile (or whatever it would be called) would yield some good information (arching or non-flatness of die(s)). One of these days I might have to get one of these shield clashes.

jacrispies

Seldom seen double profiling on this Flowing Hair Dollar. Pretty coin

https://auctions.stacksbowers.com/lots/view/3-1QKGIO/1795-flowing-hair-silver-dollar-bb-27-b-5-rarity-1-three-leaves-vf-30-pcgs

Morgan White

Rule556

Here’s a fun one. My 1921 Peace dollar with mechanical doubling on the reverse seen in PEACE, a couple of the olive branch leaves, America and Unum, and the eagle’s head.

I never quite understood how mechanical doubling can occur in only portions of the strike, but it definitely gives the coin its own personality.

justcollecting

robec

Catbert

Shelf doubling on the date, stars, denomination, and rays to name a few.