New Brunswick 10Pii, iii, iv

1860 Twelve and One Half cent indigo Steamship, plate proof vertical strip of three showing the three different types of horizontal SPECIMEN overprints in red (top to bottom: Type D + B + C), in the issued colour on card mounted india paper. A scarce se-tenant SPECIMEN strip, Very Fine (Unitrade 10Pii, iii, iv; catalogue value $580)