Variation on a theme here. One lot I had won in the Hulett sales came with a ticket that was for Brooker 613 (6d mule with the obverse mark Crown over Bell over Portcullis) and to my knowledge is the only one known. I had marked that as a buy when it appeared, but the ticket (613) was for a different coin to the one I bought, so dutifully sent it back to be reunited with the right coin. However, the coin I really wanted didn't appear in any sale as far as I could see, so where is it? I know John had Brooker 613 because I saw it when visiting on one occasion, hence the interest. Humpf.