Need to ask about a lot?

SOUTH WEST AFRICA - 1923 1d rose-red overprint Setting I with 'WES' FOR 'WEST' variety, SG 2b, within never hinged mint upper left corner (reduced gutter at top) BLOCK of 4, tiny trace of the letter 't' still visible. Small surface rub, a scarce and attractive positional item. (4 stamps)