Ultimately this is a $20 part. Just open the box.
Especially since the box has diagrams of about 3 different styles of levers. And check boxes. But, this one is "none of the above", and has a printed label attached.
I've tried to search for the SS-5S levers on the web, and seem to be getting links to everything but that one.
I would allow the seller to download a 3rd party photo as long as they are willing to guarantee their photo matches what is in the box.