I concur. It appears to have Shimano Z-series shift levers and brakes, which would make it no older than 1984. These parts were upper entry level and in conjunction with a quick release only on the front hub, would point to the bottom 290S model in the Signature series. However, this one has 700C rims, while I believe the 1984 version used 27". So, it may be the 1985 version. A drive photo and the serial number should provide corroboration on both the model and year.