I think it should work OK.
I tested by going to Netherlands and …
- typing “Batavian” in the search field brought up the 7 Batavian Republic coins
- typing “Napoleon” brought up the 23 coins of the Napoleonic “Kingdom of Holland”
However, a search on “Kingdom of Holland” (the name of the Napoleonic state that we used previously) brings up all 400+ coins of the Netherlands.
So it is a little sensitive to search terms for the “Kingdom of Holland” (1807-1815) period, but these are all somewhat rare types, with only one of them having a Rarity Index below 93.