Postage stamps and postal history of Iceland
Regular mail service in Iceland was first established by a charter of 13 May 1776, and on 1 January 1873, Iceland issued its first postage stamps. The design was the same as for the Danish numeral issue of the time (numeral of value surmounted by a crown all inside an oval), denominated with values ranging from 2 to 16 skilling, and inscribed ÍSLAND. All are scarce or rare, and used copies are especially hard to find.
Source: Wikipedia — Postage stamps and postal history of Iceland (CC BY-SA 4.0)