I would say that the country of origin was whatever country actually struck the coins. In other words it would be where the mint was physically...
How do you define modern ? For that matter, how do you define rare ? I'm asking because if I were to define modern and rare, there wouldn't be...
C'mon now Rusty, that's only true when it has a purple sticker :D
The question asked is - When is a coin worth more than graded value? The answer is - when it is worth more. Now some are probably sitting there...
Separate names with a comma.