I have no idea what the serial number is, nor do I think it's even worth it to go ask the person if I can find the serial number and get back to them. As I said, I think the only thing Paramount about it is the stickers on the DT. I do know the parts group isn't what I'd expect of a Paramount. What looked like 80s Shimano 600 with newer Shimano brakes. If you guys want I can try to check the bike out tomorrow, but I think it would be a waste of time.