Transvaal / OFS Revenues 1893 £300 Bill of Exchange

OFS/ZAR 1893 £300 Bill of Exchange drawn on Johannesburg payable at Harrismith bearing on reverse lovely combination of OFS 3d Bank Wissel BW stamps (6), OFS 6d Fiscal F1 and ZAR 1/- & 2/6 revenue charges. A great piece illustrating the stamp duties on payments between the provinces, a colourful array, rare.