1883 English cricket season
The 1883 English cricket season saw the first of four successive titles won by Notts, and the beginning of the "Great Revival" of Surrey, who had been among the weaker counties since 1866.
a An unofficial seasonal title sometimes proclaimed by consensus of media and historians prior to December 1889 when the official County Championship was constituted. Although there are ante-dated claims prior to 1873, when residence qualifications were introduced, it is only since that ruling that any quasi-official status can be ascribed.
...
Wikipedia