Gambia SG15B 4d Brown wmk Crown CC Upright LINE PERF (Rare second printing)

There were three printing of this stamp. First printing on the 4 June 1880 Line Perf wmk Sideways (290 Sheets). Second printing on the 28 October 1880 Line Perf wmk upright (263 sheets) and the third printing on the 30 May June 1881 Comb Perf wmk Sideways (2000 sheets). This is the rare second printing.