Contrary to your previous post, the Elite does go back to at least 1979. The headbadge style you describe dates circa 1980-1982. Based on the components it should be 1980, possibly 1981. I suspect the S/N may be incomplete. Some manufacturers would would pre-stamp the frame with their facilty code and the year, adding the rest on completion of the frame. The blank space may represent a missing fortnight indicator. If so, that would make it 1980 or 1981, which correlates well with the other indicators. Everything is pointing towards a 1980-1981 model. Pictures would be appreciated, for posterity.