Here is an interesting find. BK63b, it comes in both the non-perforated gutter and the perforated gutter variety.
My question is "do you think its legit?" Is it the perforated gutter variety?
Attached is the note Bileski made.
Here is the signature inside the front cover as he mentions
This photo, I overlayed the perforations from between rows 1 & 2 to show the perf holes sizes and alignment.
My concern is that in the Centennial Definitive Series book by Robin Harris, he mentions this.
The fact is that the gutter perfs do not line up properly with the fold of the booklet as stated. OR do I take Bileski's word for it?