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 to this day (14.4.2011) known become pair with this cancellation. The year date 89 was only from 1.1. To 20.1.1889 used. . . . Remarkably well got unit. " according to Steuer handbook Michel x 10 = 30.000.-