Hmmmmmmm, interesting question. I've done quite a few RPM Air Gaps ... with Edelbrock logos on them. Here's a couple off the top of my head, the first of which I believe belongs to our member Slappy.
Did another for RumbleFish360 but can't put my hands on pictures of it right now (maybe in one of his threads?). His logos were polished so I know it had 'em.
What's that big bar across the runner there on the front of yours? That's where it's supposed to be.