Hi,
Recently i've adquired the 1 oz buillon from prague.
This one: https://en.numista.com/catalogue/pieces126814.html
I've adquired directly in hand from the Ceska Mincovna and the value of the coin, almost the 2018 edition, is of 2 NZ dollars instead of the 1 dollar you have in catalog.
https://ceskamincovna.cz/en/silver-1-oz-bullion-coin-czech-lion-2018-stand-1757-10380-d/
I hope you can change that