Need to ask about a lot?

SIERRA LEONE - 1897 2½d on 6d dull purple & green surcharge fine mint (two lower stamps never hinged) se-tenant BLOCK of 4 (setting positions 13, 14, 23 & 24) containing position 13 surcharge type 8 with square stop (SG 59 var), position 14 type 8 (SG 59), position 23 type 10 (SG 60) and position 24 type 11 with square stop (SG 61 var). Fresh & very attractive. (4 stamps)