GETTING back to the gist of the original thread:
The rare and popular broken ladder note....if this is the best note in his collection
The BSE1524630 in VF condition is one of 370,000,000 notes printed and I honestly fail to see what makes this so-called "popular scarce ladder" which it clearly is not (-not even significantly close to a ladder by any stretch of the imagination-) even slightly collectible any more than any Canadian's $20 note sitting in any Canadian's wallet at any given moment. In fact, since it is 1 of a set of nearly one-half of a billion notes produced by BOC printers, odds are that any old $20 in your wallet is actually more rare than this one (esp if its a queen's commemorative or if its in higher than VF condition). The other "scarce" piece of plastic up for auction (with the #3462578) is (at least) part of the commemorative edition of $20 polymers and slightly less common (1 of 43,000,000 or 1 of 3,473,999 notes produced of that particular prefix). I won't even touch on the fact that both notes' condition is also up for debate (as "AZ" rightly points out).
Neither note is a "broken ladder" nor related to anything special in terms of their numbers. These 2 notes wouldn't even qualify as a "special number" which some of us long-term collectors will have heard from members who go for "near-solids" or notes where the number resembles a birthday note/area code, etc.
If you are a collector who has a penchant for any type of serial number all this is "fine & dandy." No one is commenting on that. What we think is funny is that if you are a seller and hyping a note which is excessively common- than it begs the question: what other "stuff" are you strutting about as "special" or "scarce." That's the reason why I used silly terms like the "sister-in-law" note & "book-ends" since these are also terms that we see over-used & such "window-dresssing" is not going to sell a note.
It is not funny that the person is labelling his notes as "Scarce" or "Rare" or mislabelling them with any other superlatives. In fact, it is quite sad that people are still out there trying to dupe the unwary collector. What is funny: is the 2nd part of the original thread: "if this is the best note in his collection..."