This book is intended for collectors of Icelandic numeral cancels (NIC). It contains detailed information about postmarks 1-300 used by the postal authorities between 1903 and 1960. These information include:
1) Geographical locations on a map, plus a detailed place location with a photograph.
2) Usage on stamps over the time period.
3) Discussions of ink colour, cancel rotation and number of covers and usage of service stamps.