According to
a story published on Yakface.com, there is a variation on the logo on the back of the
The Ghost - Reveal The Rebels: Jedi Reveal Mission Series Multipack Ezra Bridger figure's vest. Follow the top link to have a closer look and to find out more on a variation you're going to have a tough time spotting.
UPDATE: Yakface's Jayson Krebsbasch has confirmed his variant Ezra has a 41981 date stamp. The one in our photo archive is 42061. Hopefully this helps variation collectors to find it!