Thanks to everyone who took a look at the photos and posted their opinions. I realize it's hard to give a definitive opinion as to whether or not the coins have been cleaned without better photos.
For future postings, when I'd like to share images with the group, I'm going to take the time to learn how to save images with a third party image hosting site, and then post the link to that site.
I really appreciate the time everyone has taken to offer their opinions and guidance. In the meantime, because there seems to be enough doubt as to whether or not some of these coins have been cleaned, I think I will return the roll to the seller, and next time I'll be a little more cautious when I make a purchase of this magnitude.
Thanks again, and I look forward to participating on this forum in the future.
Chris