Hello Everyone!

I recently picked up a bike where the owner didn’t know the origin of the frame they had in their possession. The bike was painted by Joe Bell here in San Diego back in 1988. I was hoping Joe had some records on the frame but no luck. I’ve attached some detailed photos in the hopes that there might be some distinguishable characteristics that someone would recognize. Also not sure if I'm saying this correctly but the top tub is "jetted" so the cable passes through. There are no hints of a serial number and if there was they've been painted over. Strangely the bike has Campy dropouts in the front and Shimano SE in the rear. I'm okay with my mysterious bike but there's a small part of me that wants to know what it is....

Any help or direction would be greatly appreciated.

Thank you!