Welcome to the forums. It was manufactured by Kawamura for the USA market, in 1979. It is probably at least upper entry level, as most of the bottom of the line models were being manufactured by Giant by this time. It's not a top of the line ONP. Beyond this, we'll need pictures to identify the actual model. Pictures should include one good overall picture taken from the drive side and details pictures of any tubing decal and major components, such as the derailleurs, crankset and brakes.