In this period, we're usually concerned with killers used to cancel the stamp, not a CDS (circular date stamp) that was intended more to date a cover. So most collectors don't consider the latter to be "fancy" when in a "standard" style (3rd row 4th stamp).
Collectors also usually don't consider standard
commercially available targets (1st row 3rd stamp, 2nd row 2nd stamp, 5th row 2nd stamp) and barred circles or squares (3rd row 2nd stamp) to be fancy. The commercially available killers with numbers are borderline fancy. They are included in the Cole catalog
http://www.stampsmarter.com/feature...ls_Home.html that covers the Banknote period, as well as other resources that cover earlier periods and the Banknote era.
Fancies are mostly the handmade killers (4th row 4th and 5th stamp, 5th row 1st stamp) plus commercial handstamps with picture elements.
ebay sellers will say "fancy" for unrecognizable blobs, but blobs aren't very interesting to most collectors.
These shown are fairly common. A few to be slightly less common (the last 3 stamps noted in the previous paragraph. It helps the value if the cancel can be identified by town, but that be difficult to do. It also helps value to have as complete a cancel as possible as well as being clearly struck.