unused Block Larger Than four 50c Dark Green postal savings official (O122), T. imprint, star and plate no. 5614 block of six, fresh, stamps never hinged, small separations in selvage only (as virtually always), centered to T.R., perfs. close or just barely touching, very good-fine, 'RWB' (Weill) h.s. on reverse, a very scarce and seldom offered plate no. block, Scott retail $2,200.00 photo