mint block of six (positions 83-85, 93-95) with bottom three stamps the variety, additionally position 83 with inverted "V" as first "A" in left "Panama", very fine and choice, an important first issue block, only two other blocks of six are known with just three larger multiples, ex-DeVoss and Plass, illustrated in Canal Zone Philatelist Vol. 7, No. 3 (Scott $4,050 as singles)