I picked the middle one up yesterday. When I placed it beside it's contemporaries I noticed a couple differences. First it has a pronounced flare towards the base . Secondly it is 1cm shorter than the average of the group. Thirdly it is 8mm below bottom W/G narrower than the average of the group. There is no evidence of underpour . It seems like a mini. Any one know better than me. Thanks. Graham.