Tell you something which made me laught ,just recently I have gotten two exactly similar Peterson pipes from their Aran serie, both brand new, both have same model number and overall I'm satisfied with average good quality and craftmanship on them but had noticed some differencies between them two,for instance,another one has a thicker shank and 1 cm shorter stem while the other one has the sleeker appearence having longer stem + thinner shank,both have the same capacity bowl size but the stain color and grain on the bowl surface differ significantly from each other this led me to thoughts if Peterson basic models shapes do differ a bit from year to year, I was noticing this to occure with contemporary Petersons yet before, mostly it was with stem lenght and shank diameter