100 Kroner 'Møl' Painting and Animal. Type 1, without security thread

The so-called 'Møl' series — named for the moth motif incorporated into the design — was introduced in 1972 and ran for over two decades, making it one of the longer-lived Danish note designs of the postwar period. Ib Andersen, a prominent Danish graphic artist, developed the series for Nationalbanken; his involvement represented a deliberate move toward commissioning fine artists rather than in-house engravers for currency design.

The sheer number of signature combinations across this type reflects normal rotation of Nationalbanken's governors and chief cashiers rather than any reissue or policy change. No security thread was added until the subsequent type, which effectively dates every threadless example to before that upgrade. The prefix system used here — with overlapping signatures on the same prefix in some years — means date and prefix together are required to pin down the exact variant.