I was just wondering if the unhollowed upper and lower block zones that Sacconi illustrates below are found in instruments by other Cremonese makers or if they are exclusive to Strads with original graduations? "The zones however, at the extreme upper and lower edges, defined by transverse straight lines which pass over the internal edges of the head and tail blocks, by Stradivari were always excluded from the hollowing out ... It is therefore a serious error to eliminate this reinf