1956-D Quarter with gas bubbles

[No_Ragrets]

Hello! I hope everyone is having themselves a nice day so far. After quite a while of researching what the issue was / is with this coin, I've finally been able to narrow it down to what I believe are both (large) occluded and (miniature) ruptured gas bubbles. At first glance in hand at the LCS, it appeared to have some kind of metal blob on it. It's raised and the luster flows over those raised areas. That by itself intrigued me enough to buy it at that time, and I think I got it for somewhere around $20 if my memory serves me correctly.

From what I have read online, these gas bubbles aren't very typical and can occur basically anywhere on the coin itself. As you can see from these pictures, the occluded bubble/s go from "In God We Trust" pretty much in a straight line up the the "B" in "Liberty". What I believe to be the ruptured bubbles are as follows. One to the left of the occluded line slightly above the "G" in "God." And one on Washington's jaw (in the shape of a squiggly line), as well as one on his neck (which is more prominent).

Whatever this actually is also seems to have caused some issue during minting, as the IGWT seems to have had some kind of error particularly in "OD W and UST" but I can't say for sure if that is MD or caused by this bubble. The reverse on this coin looks like it was completely unaffected by this, so could this have happened immediately after minting? That might explain why some of the letters have shifted and why the luster flows the way it does on it.

How many coins with actual bubbles have you come across in your time and what was the severity of the size? This seems rather large from the very few examples I could find online, and it is in surprisingly good condition considering the LCS owner saw it in circulation a long time ago and pulled it out for safe keeping. If you have any information to share or recommendations to make for this, I am all ears! Thanks, and have a great day!

Edit to add: I apparently have images of this coin that far exceed the file size limits. I've added what I could for the time being, and I will see what I can do to get clear pictures of this in the near future.
1956-D 25C Obv- 13MP Occluded Gas Bubble(1).JPG 1956-D 25C Rev- 13MP.JPG
1956-D 25C Rev- 13MP RPM Zoomed.JPG

[occnumis2021]

i didn't read your whole post. i wanted to say nice images, presentation.

if you are asking if that is an RPM , i'm leaning towards not.

sometimes, since you're taking decent images, you may wanna hit a mm or date at an angle. head-on can be a little tough to distinguish depth et .

this can be combined with lighting angles as well to create effective (or ineffective) shadows.

[No_Ragrets]

i didn't read your whole post. i wanted to say nice images, presentation.

if you are asking if that is an RPM , i'm leaning towards not.

sometimes, since you're taking decent images, you may wanna hit a mm or date at an angle. head-on can be a little tough to distinguish depth et .

this can be combined with lighting angles as well to create effective (or ineffective) shadows.

Thank you for your reply! The mintmark was not really intended to be a focus of the post, so maybe I should have left it out. It was one of the few pictures I have of the coin in question that was able to load here so I thought I'd just add it so everyone could have a closer look. I'm thinking it was a mistake to have it up, but I suppose I'll just have to deal with that. The subject of the post concerns the obverse and what looks like George Washington's runny nose, which I believe to be an occluded gas bubble.

I have been trying to upgrade my coin photography of late, and these pictures were actually taken with a coin microscope I had recently purchased. It has fantastic clarity and can zoom in to any point without sacrificing quality. The problem with it is that the image files tend to be a bit large, with two modes for capturing images. There is a 52MP and a 13MP option, and I try my best to crop the images to reduce file size but I need to find another method to shrink the files to fit here. Either that or I can upload them to an imgur link for viewing at full quality. Since I am new here, I wanted to ask... are links to other websites permitted here or are they frowned upon?

Thank you again for your reply!

[occnumis2021]

Thank you for your reply! The mintmark was not really intended to be a focus of the post, so maybe I should have left it out. It was one of the few pictures I have of the coin in question that was able to load here so I thought I'd just add it so everyone could have a closer look. I'm thinking it was a mistake to have it up, but I suppose I'll just have to deal with that. The subject of the post concerns the obverse and what looks like George Washington's runny nose, which I believe to be an occluded gas bubble.

I have been trying to upgrade my coin photography of late, and these pictures were actually taken with a coin microscope I had recently purchased. It has fantastic clarity and can zoom in to any point without sacrificing quality. The problem with it is that the image files tend to be a bit large, with two modes for capturing images. There is a 52MP and a 13MP option, and I try my best to crop the images to reduce file size but I need to find another method to shrink the files to fit here. Either that or I can upload them to an imgur link for viewing at full quality. Since I am new here, I wanted to ask... are links to other websites permitted here or are they frowned upon?

Thank you again for your reply!

i see now.

the area in front of the face, being quite shiny in person i bet, could be anything from pmd to scraped dies. i see what looks like a potential bump up in front of the head/hair but that could just look like that from head-on. and angled image(s) of the feature could help narrow it down specifically.

if you have a pc/notebook etc, just drop your images into paint or another image editing program, reduce the dimensions (you can keep the originals) to around 1200x1200 or smaller and save the image. should drop the size dramatically.

here are a couple images i took with professional equip and then just did what i said above and now their respective sizes on disk are 107kb and 87kb. that is just from resizing and keeping decent quality. NOW, the cropped images probably aren't good for enlarging now but they serve the immediate purpose which is why i mentioned keeping your originals for a little while. you can recrop specific areas or the whole image again for various purposes.

edited to add: every occluded gas bubble coin (including in-hand and online) have had a very pronounced raised surface, which looks just like a bubble underneath. there could be exceptions but i think that is the general rule here.

and before you ask, no you cannot get a needle and pop them.

18.jpg

78-s-long-nock-green-crap.jpg







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[No_Ragrets]

i see now.

the area in front of the face, being quite shiny in person i bet, could be anything from pmd to scraped dies. i see what looks like a potential bump up in front of the head/hair but that could just look like that from head-on. and angled image(s) of the feature could help narrow it down specifically.

if you have a pc/notebook etc, just drop your images into paint or another image editing program, reduce the dimensions (you can keep the originals) to around 1200x1200 or smaller and save the image. should drop the size dramatically.

here are a couple images i took with professional equip and then just did what i said above and now their respective sizes on disk are 107kb and 87kb. that is just from resizing and keeping decent quality. NOW, the cropped images probably aren't good for enlarging now but they serve the immediate purpose which is why i mentioned keeping your originals for a little while. you can recrop specific areas or the whole image again for various purposes.

edited to add: every occluded gas bubble coin (including in-hand and online) have had a very pronounced raised surface, which looks just like a bubble underneath. there could be exceptions but i think that is the general rule here.

and before you ask, no you cannot get a needle and pop them.

18.jpg

78-s-long-nock-green-crap.jpg







\

While this coin may have some small degree of PMD, I can 100% guarantee this raised area is not PMD. The surface seems to have slightly moved under pressure with a toothpick here at home while I had it under my scope, and there are horizontal lines across the area in contention (basically below his nose, the snot coming out) that I'm 99% sure were not there prior to my rudimentary examination here at home.

I will definitely look into every aspect (so long as it is affordable) to get these images reduced in size so that I can upload them here. Maybe I'll copy them and crop them only to include the area in question? That might reduce the file size without compressing the image at all (hopefully) or I can host an imgur link to it for original quality if that is allowed.

[MintErrors]

In my opinion, All I wish to offer here is check the size of the photo. You should be able to reduce the overall pixel size down to somewhere close to a ball park of 1000x1000 pixels. It's important to keep the "aspect ratio" the same. Most products should allow you to change the photo size. Do one of the numbers and see if the other automatically changes. Save a copy of that changed image. Ensure they are jpg, as that is probably the most compressed version you can get, plus it is accepted on this website. Other types of photos may not be. Check free photo programs like photos on Microsoft operating systems to see if they allow you to edit and then resize.

If it is a gas bubble, they can occur when a coin gets really hot. Could this have at one time been in a safe that was exposed to a fire ?

It's too "clean" to have been directly in a fire or exposed to a fire. If it was, it would be cooked, charred and blackened. But, there would be gas bubbles galore.

Planchets (blanks) are typically heated up to a very high heat in the minting process. I know cents can go as high as 1700F. This could have been an issue with this planchet, but it's difficult to be certain. Even so, it's not a major mint error, and thus, probably will not fetch a high premium.

[occnumis2021]

looking at the image with fresh eyes, i see now it is the overexposure of the light that threw me off.

i do see that it looks raised from in front of the face, up to the head.

would need better images to offer anything further.

happy hunting.