I have two NES Impossible Mission 2 for the NES. Booth are in identical case.
The first one have the white label (which i'm sure it's the SEI version).
The other have a color label. I think it's the AVE version but i doesn't see any logo or name that said AVE. On the label and case it's said Epyx and SEI.
Could this be a label variation by SEI ?