25 Øre Handelsstederne i Grønland, Ivigtut star

The "Ivigtut star" designation refers to a small star overprint applied to distinguish notes intended for use at Ivigtut, the cryolite mining settlement on Greenland's southwest coast. Ivigtut was functionally separate from the general trading-post network — the cryolite operation was commercially significant enough, supplying aluminum production in Europe and North America, that its local currency needs were administered distinctly.

The overprint system across the P#4 series was a practical solution to controlling which scrip circulated where, since notes moving between settlements outside their designated area created accounting headaches for Copenhagen administrators. The star variants are the scarcest of the location overprints in this denomination.