I'm used to seeing Rogers drums more than others. I do have a bit of experience with other manufacturers from the 60's, but at the moment maybe not enough. For the most part, I believe the drums I have owned all shared a common principle for applying the wrap, and that is they attempted to locate seams so as not to be too, too obvious. So the bottom piece of wrap was installed on a bass drum first, for example, and the top piece overlaps it in such a manner that the seam edge is facing the floor. Similarly, a floor tom has the seam in the back and normally the edge is facing the drummer. Tom toms mostly have the seam edge facing the drummer.
Was this normally Leedy's policy under the Slingerland era management - late 50's to mid-60's? I've seen one or two lately that didn't seem to match my recollection where the seam edge seemed very noticeable.