Identify this vintage Benchmade auto for me

[kilogolf65]

Picked this up in a package deal. Not sure of the model though. No box or papers. Has been a user and has some discoloration spots on the blade. It cleaned up nice and opens just fine. Any idea what model and what it's worth?

 

[Icky Thump]

Tsunami, I think..

 

[flatblackcapo]

I don't know what model it is but I like it!

 

[jpm2]

https://www.bladeforums.com/threads/vintage-benchmade-7500-available-again.893681/

 

[palonej]

Very cool looking BM!!