1955 D over S Accumulation

I have accumulated the following Jefferson Nickels that appear to be the D over S variety. I am showing only the mint mark since the rest of the coin is generic. If I may, I would like some feedback, are they or aren't they? Are there potentials? Thanks.

 

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I certainly don't see any, do you have examples?
No. Don't bother. Too much trouble.
They all have that "smooshed look". No apparent "S" below.

 

Here is the page from Variety Vista.
1955-D OMMs

 

You could label them. gives an Idea what you see I think that I may see a few, one is a D/D.