Remember those puzzles where you had to look at two similar pictures and 'spot the differences'? Here is a needle tin version. At first glance the five GENERAL needle tins below all look somewhat similar but on closer inspection you can notice several differences, which show how one design was subtly adapted to suit production needs of the day. What is less obvious is, why? The first two in the top row above do not include any claims as to where they are made, nor details o