Up for auction is a Latitude 64 Rive prototype royal line disc. The disc weighs 172g. This is the distance driver included in the just released Royal Line mystery box, so it is pretty rare. The disc was thrown 3 times in 1 round of disc golf and did not hit anything but air or grass, so it is in mint condition. The grip on this disc is spectacular, an improvement over Gold Line and Opto in my opinion. The disc was approved by the PDGA on Nov 21 so it can b...e used in sanctioned play. Latitude 64 has not released any flight numbers for this disc yet. I found it to be similar to a Ballista Pro in distance and fade, but now you get to see what it is like for your game. I have a Royal Line Faith and Opto Glimmer Explorer from the mystery box available on 2 other listings.