unused Block Larger Than four  $1 black and red on blue handstamped in black, a block of six (2x3) with the lower left stamp showing variety handstamp inverted, fine mint. ISC J100/a. Photo
unused Block Larger Than four $1 black and red on blue handstamped in black, a block of six (2x3) with the lower left stamp showing variety handstamp inverted, fine mint. ISC J100/a. Photo

Details
unused Block Larger Than four $1 black and red on blue handstamped in black, a block of six (2x3) with the lower left stamp showing variety handstamp inverted, fine mint. ISC J100/a. Photo