Obverse looks cleaned, but also looks to have the remnants of another numeral under the second one in the date (1 over 8 ?). Now that I know it's a 6d, I would suggest it's better than EF - in fact, there is barely any sign of wear. The lack of detail is simply caused by trying to get too much design onto a small die, and is a common feature of the sixpence. I at first thought the 'overdate' was just a toning spot, so I zoomed the screen and there definitely seems to be something there. It does look like a 9, though that's open to debate. Have you also noticed the right hand side of the second 8? It looks rather different from the left hand side. I think I now need to do three things (after go home): 1. Buy a macro lense for my canon DSLR - I tried the 'water drop' trick using my iPhone last night but did't work 2. Compare the 3 1818 6D I have and check the dates details 3. Send this one to CGS for their opinion, not sure if they will reject it after two second coz the doubt about being cleaned... Will report here later.