unmounted mint Block Larger Than four 6c Brown Red (224), T.L. imprint and plate no. 23 block of twenty (10x2) with imperf. half arrow at R., very fresh, crisp and intact, exceptionally bright shade, brilliant o.g., never hinged, R. perfs. touch on some, mostly fine plate no. block, Scott retail $3,150.00+ (plate no. block unpriced never hinged) photo