I found this after ordering 5 rolls of washington silver quarters from a website. Theres a lightning shaped cud mark protruding off the coin by the L in "Liberty".
Welcome to CoinTalk @asilverbug I am not an expert so wait for an expert to tell you what this is. It is probably the result of a die crack. I can, with certainty, say that what you see there is not a cud. A cud must meet two requirements. It must touch or run along some length of the rim of the coin and it must extend into the field of the coin. Your example does not touch any part of the rim. For that reason, by definition, it can not be a cud. Here is a cud in the photograph below. A cud does not have to be so large as this. You may find this link interesting and educational. http://cuds-on-coins.com
Like I said. I think it is the result of a die crack. You can do a search on 'die crack' and you will find information about it. Part of the thing about collecting or developing an interest in coins is the study that goes along with it. If I tell you it is the result of a die crack, will that really tell you anything? Go and read for 5 to 10 minutes and see why and how a crack in the die would deposit that lump on your coin. p.s. I would keep that coin although I don't think the lump you see adds any or much value more than the face value of your coin. Still, it is nice and I would keep it.
Dang... I meant, die chip. http://www.error-ref.com/die-chips/ A free-standing die chip - doesn't seem to be related to a crack.
Always need to show the reverse as there is a good C reverse for the 1964-D. It's subtle from this photo need a good magnification eye loupe. There is an easier marker that was posted in another thread, and of course I forgot what it was.
It's not a die chip. The surfaces look cleaned or wiped, and the 'stuff' to the left of the L could be a small occluded gas bubble (pre-lamination) or it could be damage. A closer photo of that area would be helpful.
I was thinking that myself. There is also something between the B and E. Better photos of the area would definitely help. @asilverbug
View attachment 912981 Hmm. Can't wait to find out exactly what it is. A gas bubble on a quarter. I didn't know to expect that. Good to know. And what might this be? A hair?
Strange, it appears to run off the rim at the upper arrow, maybe a hair as suggested or a reflection from something on the holder.
I went looking and my preliminary research shows: "Occluded gas bubbles should not be confused with blistered plating, the latter being an affliction restricted to copper-plated zinc cents." http://www.error-ref.com/gas-bubbles/ That same website instructs that "By definition, occluded gas bubbles are generally restricted to solid-alloy issues." Is it because the 1964 quarter is only 90% silver, it is a solid-alloy issue? I will be reading more about this. So much to learn.
It doesn't appear on the first photo, which was taken outside of the capsule, so yeah, it's a hair or just foreign material in the photo.