From AQ Wiki:
Guild City PTR
Description: Awarded to active AQW members who helped the team test Guilds Phase 2.
Requirements: Must have been in a guild in which either the guild leader or a guild member logged onto the PTR server between Jul 26th - Oct 10th, 2013.
I don't think that there's a spam packet for this one, if we had, someone would already post it here.
I'm here to help all my fellow botter friends on AQW, if you have any question about the game, PM me and I will try to help you.