COLOMBIA. Costa Rica. (1889) counterstamp on Colombia 1876 Medellín 5 Decimos. KM-135.1. EF-40, C/M AU Detail (PCGS).Deep pewter gray with lighter toning and luster in protected areas around the peripheries. Choice eye appeal, with bold marks and only scattered light marks.From Heritages June 2006 sale of the Whittier Collection, lot 16837.