Pentagon was originally issued as a trader patch, used until 1968
X5 (BBv6: X3)
X6a (BBv6: X4a)
X6b (BBv6: X4b)
eX1965-1 (BBv6: )
eX1966-1 (BBv6: )
eX1967-1 (BBv6: )
eX1968-1 (BBv6: eX1968-1)
eX196x-1 (BBv6: eX1968-3)
eX196x-2 (BBv6: )
eX196x-3 (BBv6: eX1968-2)
eX196x-4 (BBv6: )
eX196x-5 (BBv6: )