Since this topic was posted I have been hunting for a nice Large D since my 29-D in my set is a Small D. My take so far is that the Large D is harder to find than the Small D. This makes no sense because the Small D is the D used in 16-17 Dimes. One problem is that a lot of 29-D Dimes has a filled MintMark and the opening in the MM is the best way to tell the difference. I am still studying this.
Has anyone found a photo of an uncirculated micro d yet? I really would love to see one of these. My 29d is the normal d.