Need help ID'ing a V8-60 intake

What is it?? Very nicely done V8-60 2x2 pattern that doesn't appear to be a high school shop casting. Carb pads have very mild angle, so it's not marine. Not a single name, number, or anything visible on it. Might have once had a name, but if so, it was removed when polishing. No irregularities in any area a name could have been. Very smooth. Surely somebody out there has seen one of these????

Thanks for any and all help,
Art