Nauru 1916 5p G.R.I. Overprint

Nauru · 1916 · 5p

The stamp features a profile portrait of King George V, originally a British definitive stamp, overprinted in black with 'NAURU' and 'G.R.I.' (Georgius Rex Imperator). The original denomination '5d' is visible below the portrait.

This stamp was issued during World War I when Nauru, formerly a German possession, was occupied by Australian forces. The overprint signifies the change in administration and the establishment of British authority for postal services in the territory.