1873 (Aug 4) Envelope from San José to Rome, bearing 1863 3r scarlet, tied by "4 AGT 73" octagonal ds, carried by British steamer via Colon with corresponding cds in centre, struck with "17" marking on arrival following application of 1870-74 30c, 40c & 1L postage dues; a highly eye-catching usage and, according to our records, unique exhibiting a combination of three different Italian denominations with the first issue; signed Holcombe; ex Palumbo. (Image)