The Year Sets below are complete with S/S, Airs, Special Delivery and Postage Dues. Apparent "skips" in the numbers are caused

NH

The Year Sets below are complete with S/S, Airs, Special Delivery and Postage Dues. Apparent "skips" in the numbers are caused by Unificato's system of assigning numbers to each stamp within a S/S as well as a number to the S/S itself. The S/S are certainly included in each Year Set, of course, but the individual stamps removed from the S/S are not.

Type: NH

Country: S M O M