Normally, I would defer to a knowledgeable person who has the opportunity to examine the frame in person, but in this case I take exception. A Univega frame of this apparent period would almost certainly have been manufactured by Miyata. However, if this were a Miyata manufactured frame, the serial number would place it circa 1974, predating the existance of the Univega brand. Given the era and serial number format, a Bridgestone manufactured frame is the best candidate.