!979 P Dollar Coin Question

Me and my sone got our first rolls at the bank a few days ago. I got two rolls of halves and a roll of one dollar SB Anthony dollar coins. I found a few interesting dollars and I think I got skunked on the halves. Here is what I found in the roll of dollar coins. 22 -1979 Susan B Anthony's and 3 - 1980's.
Thanks!
Most of the 1979's have the D, two have a P and one appears to have an S Here are som pics. Maybe you can tell me a little more about these.

P Stamp One is possible error?


S Stamp


D Stamps

 

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Need up close pics

 

Is it that the mm's look filled, if so, that's normal

 

In the first pic, the very left, that one is a little off center

 

What are the MM's? I am very new to this so I need to learn the lingo still. hehehe..

 

Mint marks

 

Ok got it.

 

The teller has another $150 of one dollar coins left.

 

Buy e'm,if any are 1980, 81, or 99 pm me, I'll buy e'm above face or trade!

 

I will take a trip to the bank and get a couple rolls and see what I find.

 

got some low mintages on the 80's, 81's, and 99'. good luck roll-hunting.