I know nothing about these coins, but off hand I'd say this one has EF detail. It is nicely centered, with full rims, clearly-defined denticles, and no serious cuts or marks. The central detail seems somewhat blunt; is that typical for these coins? Is this one perhaps a sea-salvaged piece that has been conserved? The weak detail might be related to environmental damage which has been corrected as much as possible via the conserving process.
I assume this is a silver coin; can you confirm?
PS: it's definitely nice, and purdy!