I took some of the coins to a coin dealer today and he says that the quarter may be platinum plated but is not silver on any level. The ones that look like DDRs he looked at and said they were die characteristics. He told me that mine very closely resembled a double die but were not a true double die, at least for the ones he looked at. I didn't bring in all of them to him. He also recommended that I buy both Cherry picker's guides available to develop a more discerning eye since I am much more heavily into collecting now. So, I have coins that closely resemble some double dies and he said most people would probably mistake them for a double die. Since he has alwas given me great advice in the past I will buy the guides at my earliest convenience. He showed me a truly doubled die on a 1972 penny and it was superb to examine. The doubling effect on the lettering is a bit heavier and exists across all of the lettering on the coin on the face. He even gave me a 1993 D uncirculated penny as a gift just for coming in for advice. So now I am anticipating getting my guides and reading up on what I need to know. Knowledge is enlightening and valuable. And even for strong die characteristics as he called it the coins may still sell well above their face value of only the 25 cents and 50 cents I paid. At least for now I plan to keep them in my coin album. Some of mine do have the lettering overlapped on all of the lettering on the back of the coin and I will bring those to him on another day.
Have not gotten my light box built yet due to a myriad of things that came up this week so I still can't get photos of my coins without the light flashing so brightly that it is impossible to see the coin clearly. I would love to post some pics and will probably be able to do so the middle of next week. All this week I have been on the go. I finally am resting while I type this reply and then it's off to sleep I go.