2 Mark medium rose lilac, horizontal pair with two full postmarks Cameroon 4 1 89 (with year date! ! ), photo expertize Steuer BPP: \"by of the extremly rare submission is a the second until today (14.4.2011) known become pair with this cancellation. The year date 89 became only from 1.1. To 20.1.1889 used. Remarkably well got unit. \" according to Steuer handbook Michel x 10 = 30.000.-