Variant a and b Examples
Variant a
Cancels with variant a have no killer bars.
The following cancel is classified as Type 3as
In the above example, no killer bars are present. In order to kill the stamp, a target killer (concentric circles) was used.
Variant b
Cancels with variant b have one or more, but not all killer bars, missing or removed.
The following cancel is classified as Type 3b (BC-XTX)
In the above example, the top and bottom killer bars are missing (that's what the "X" in the "XTX" means).
The following cancel is classified as Type 5bhks (XOX)
In the above example, the top and bottom killer bars are missing.
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