St Kitts Nevis & Anguilla 1966 1/2c Churchill Mispacement of Gold. SG151 var

St Kitts Nevis & Anguilla 1966 1/2c Churchill Mispacement of Gold.Fine u/m corner block of 4 with' cents' transposed to left side of stamp but entirely missing from both stamps in first vertical row. Very spectacular error. SG151 var