Taiwan Province - 53 var. (tso and erh transposed at positions 3 and 4 in 6 x 2 UR block of 12), CSS TW 76f (x2)

Taiwan Province - 53 var. (tso and erh transposed at positions 3 and 4 in 6 x 2 UR block of 12), CSS TW 76f (x2)