On the "Game Account Details" page of your Master Account (accessed via the NCsoft site).
You won't see a balance yet, however, unless you've purchased some via the website store today.
Leader of Legion of Valor/Fallen Legion (Victory server)
http://legionofvalor.guildportal.com / http://fallenlegion.guildportal.com
StainedGlassScarlet - L50 Spines/Inv Scrapper | Badges: 1,396
Avatar detail taken from full-size piece by Douglas Shuler here
I haven't purchased any yet, but I'm showing a balance of 1200 from the bonus over the last couple months.
@Roderick
Where can we see how many we have?