A very fine used single of the 1902-1904 1d light rosine and grey King Edward VII issue from Transvaal, wmk crown CA, used in Swaziland, during the transition period when Swaziland's postal service was administered by Transvaal immediately following the Boer war. A scarce and desirable usage.
Gibbons values the basic stamp at just 15p, but online research indicates that this cancel is worth between $5 and $20. So, we estimate it at $10. The stamp offered here grades 75 as follows:
