There are many examples of notes that were considered rare/scarce/tough to find, yet as soon as someone finds a run of them they tend to seem more abundant and less desirable as they once did....I believe it was not long ago that someone reported having a run of a dozen or so *N/Y notes.....as soon as the number available is greater than one thought the price seems to decrease
Not just the price decreases- but typically so does the demand.
A note I would definitely shy away from is the Devils BC-29a Coyne-Towers H/A or BC-29b Beattie-Coyne H/A change-over as I've seen about as many as the BC-37bA-i $1.00 *B/M or the BC-38bA $2.00 *B/B!
Many collectors get wise to what's abundant (there are too many examples to list here) and so the demand drops like a stone. I doubt the *N/Y is abundant but there are notes that we have not seen sequential runs, or even higher grades for a long time, which will generate much more interest.
The power of this forum, the Internet auctions, and the more revised/well researched Charltons catalogues have conspired against the sequential collectors desire to pay and get premiums for sequential runs.
A sequential run of notes is nice to have (esp in 3's) but I would be cautious of assuming they're all UNC, that others will pay premium (just because you did), etc. Just know what you are getting yourself into and do not assume that selling a set together will net you more then if you had sold them separately.
To the original poster Tumbomlike- you may wish to test our theories by selling your 2 set note individually and selling 3 together. Once you've completed the sale- ask yourself if you would have done better to sell separately or in runs... Please keep us posted how it turns out!