For the 1966 third edition hardback Hobbit, it says on that "there are eight impressions of the Allen & Unwin Third Edition recorded between 1966 and 1972, but only seven of these actually "exist" - see above. While all are similar in most respects there are a few differences." But then there is a list of only seven impressions, with the first stating it doesn't exist. So are there actually six impressions or am I missing something? Thanks.