Hi Hans, i (and a friend of mine), both have x-175's. his is a 57, mine is a 58. both of them have reddish tortoise shell pickguards. i know in your book it doesnt say anything about these type of pickguards, but they look totally original. is it just coincidence that we both have the same guard? or are they original? i can send you a pic if you need one. thanks,larry