SWAZILAND 1978 (CTO) HYDRO-ELECTRIC POWER IMPRINT/PLATE BLOCKS
Hydro-Electric Power imprint/plate 1C–1C blocks x 10 with MBABANE, SWAZILAND circular cancels dated 6 III 78, the first day of issue (4 items). Fine cancelled-to-order. SG289-292; SC298-301
