The decal style places it pre-1985 while the presence of the Campagnolo front derailleur hanger should place it no earlier than 1982. The Portacatena dropout is not inconsistent with the time frame. So, it would appear to be 1982-1984, provided it is original condition.
I think the yellow bar tape was the correct choice. While the components are not era correct, they are a good mix that maximizes performance and amenities while still retaining the 1980s flavour. Enjoy!
