What's the real sprite of the backpack from 25 Anniversary?

Question

evolved_backpack_438198.gif (64×64) (tibia.com)

It's changing always or it has 1 unique sprite?

Will change when you open and close it?

Comments

Your title asks one question and your text 2 more. You should make them all the same thing.

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You could try asking: "is the sprite of the evolved backpack automatically changing between two designs or it must be triggered in order to switch images?"

Answer 1

It keeps changing, nothing you do stops it or triggers it, it's just a perpetual animation