Liberia, 1866-69, 6¢ Light Red. In combination with 1866-69, 12¢ light blue + 1880, 12¢ yellow on 1887, 10¢ registration entire to Freetown, Sierra Leone, all tied by "Monrovia, Liberia, Jul 1, 1889" cds's with matching boxed registry date stamp additionally tying 12¢, light Freetown receiving postmark at left, Very Fine, an extremely rare usage of the 1866-69 6¢ & 12¢ Fourth Transfer issues on cover, one of only two known covers bearing these issues, ex Cockrill; signed Holcombe. Scott No. 13+14+19  Estimate $4,000 - 6,000. $0 (Image)