1972-D Nickel And 1988-D Quarter Cuds And Possible Mule

That nickel Cud is epic.

The buffalo not a mule - it looks like some kind of button backing.

The quarter, I just found in a roll of mixed quarters. While I was going through it I noticed all the good date State Quarters were missing. I was hoping whoever did it was more interested in the new ones than the old ones. Sure enough, while looking through them I found it and a couple interesting semi-collectible old quarters, nothing valuable that I know of, just interesting.
The nickel I have had for many years mixed in with other stuff I was trying to keep. Thought I had lost it a couple times. Finally put it in a folder and trying to do justice to it and some other old coins I have that I got from my dad when he was a Merchant Seaman back in WWII.
The mule? I have had, I guess 10 or so years, not as long as the nickel. I just laid a penny on top and it is the same o/d as what the center looks to be. The second and third layer looks to be the same total thickness overall as a single penny. The top diameter is just smaller than a current dime. So I think it is just a nickel and a penny, that's all. I think I remember getting it in some change from a purchase many years ago. Guess I need to measure the top diameter accurately and see what it might match up with.

Check the entire surface of the buffalo side of your last piece for a hole. Almost willing to bet it's a squirting nickel gag trick. What is absolutely certain - the mint didn't make that coin like that.