Hi!
I was looking through Scott (2012 edition), and found that 3030b is listed as "pane of 15+label", whereas BK235 is listed as a booklet. When looking for 3030b on
ebay and bidStart, I came up on sellers using 3030b and BK235 interchangeably. Am I missing something - I thought Scott does not double-list same objects? And if it's not double-listing, does anyone know of a clear-cut difference between those two?