For a minimal error such as A for V, not a lot. If you ever found an example with the words jumbled up, I suspect there would be quite a lot of interest.
For what it's worth, CoE quotes 325 against 275 for a 1696 1st bust regular edge coin, no premium for a 1700 and 14% extra on a 1699.
I also suspect the rarity will be no different to the existing documented types. The most likely reason it has not been identified previously being the relatively few specialists in any one field.