Its fine Marco, the ESB-a yoda's usually come in long baggies & the seals are genuine, you have a legit & quite nice baggie there, so put your mind at ease mate, here are a few example though just to reassure you buddy.
My 3 -
ESB-a Brown Snake (same as yours)
ESB-a green snake (which has since been removed from that nasty AFA cramped case & re cased BTW)
ESB-a Orange snake
& one that's just popped up on the bay -
Not a LL BTW IMO
Hope that helps Dr D