It’s unlike any other currency card I have. I can’t go off of the cardsmiths logo because it’s on both sides. Normally that small circular logo is only on the front and the back has a large circular logo and shiny logo in the corner. This card doesn’t have either of those. I guess I would say the side with the 17 of 21 in the shiny rectangular box, centered at the bottom, would be the back because that somewhat resembles the stamped serials on most other gems.