1852, 2 b. olive green, two vertically bisected singles, tied to 1864 folded letter to Spoleto by lozenge cancel, postmarked with Roma double-circle c.d.s. (8 Mar) alongside tax mark, reverse with indistinct transit and Spoleto c.d.s. receiver (9 Mar) in red, most unusual. Cert. Colla (2014). (Michel 3a)
