Jim -
The basic puukko and leuku designs have been around for several
hundred, maybe a thousand years dating back to Viking times. Of
course you never see anything that old outside of a museum. My
earliest puukko that I can date with accuracy is the late 1800's.
Although I really doubt that the Sami peoples ever used the
Marttiini machete. They certainly did use long (10-12 inch) leuku.
Here's some pics of some of my collection of Scandinavian knives.
http://home.earthlink.net/~rsblade/nordic.htm
Rich S