16 d "occasionally the two sides at the oval are this" 3 3 2 Is it a cricketing term?
I think this one was OFF AND ON which I believe are cricketing terms. By the way, it helps, as well as giving the clue and number of letters, if you also give any letters which you have already solved, e.g. ?F? A?D ?N.
Winning a silver ball pen would be nice. In fact winning a BIC biro would be better than I've ever done before.
JimB. Have you a lab where do you produce your Oil of Vitriol?