
On your title of the thread you mention D/D which we normally assume as a RPM (mint mark variety) issue. The proper term you should have used is 'doubled die' or
DDO (doubled-Die-Obverse) or
DDR (Doubled-Die-Reverse).
The images are so small, all I see is die scratches in the fields. There may be some MD (Machine-Doubling) present, but the glare on the devices maybe covering that?
But back to the real question you have:

If this doesn't exactly answer your question, feel free to ask more. I have almost 7,000 images on subjects you might want an answer to.