I have found a verified B-25 Browning with the number 8K3RP7055 (1978). More research is needed. Found another B-25 with 8K4 model number and identical forend, this gun may well be a B-25. If so, it is a late model Superposed Broadway. Curiouser and curiouser.
Whatever it is, it is $849 shipped, AK and HI extra for shipping.