1917 cover to England with four Admiral 1d’s tied by MAZABUKA 15 APR 17 cancels. A Livingstone 17 APR 17 transit cancel is on the back. Mazabuka is a town south-west of Lusaka. The name Mazabuka originates from a Tonga local language word "Twazabuka" or "Kuzabuka" which means "To cross over the river". The cover has a few faults, but an uncommon cancellation and very unusual 4d rate.