It is my understanding that proofs and "burnished" coins alike all receive an extra strike as part of the special minting they receive aimed at producing more eye appealing specimens. What I'm wondering is if this second strike, assuming my understanding is correct, is visible on the coin and are doubled dies even a possibility on newer proof and burnished coins with all the attention paid to detail and selection? Here I have a 2017 W Burnished Silver Eagle "FIRST STRIKE", graded SP70. As I took a closer look today I noticed some curious doubling on the lettering of the 'I-G-W-T' motto on the obverse and most of the lettering on the outer edge of the reverse as well on the banner held by the eagle. From the description of the striking process it would seem to me that this would be a common occurrence and not considered a mint error or die variety but I figured I'd look into it and see what some more experienced individuals had to say. It may be a dumb question but this is the only "burnished" coin in my collection and I've not had a chance to take a close look at any others in my short time collecting. Thanks, any info is appreciated. Go easy on me.
I see what you are mentioning here but I am no expert in this area. The experts will chime in to advise you.