Last week I was not able to list some coins on eBay with the word "unattributed" in the title, though I was able to use it in the description. I changed "unattributed" to "unidentified" and the listing went through. The error message said that replica listings were not allowed. I figured it must have been a temporary glitch as I have used the word "unattributed" in many listings over the years. Today I had the same error so I called customer support, which was not any help at all...unless I was looking for a headache! Anyway, for now, eBay seems to think that unattributed means replica.