This is a copy of Swedish m/1687 worm for infantry musket.
They where very skilled at the time and we have try to make it as close as possible but we can not do it 100%
On the pictures you can see the original in armymuseum,ant the rusty worm is in a privat collection and are founded in the mountains after the disaster when Armfeldts army meet the cold winter in the mountains in Norway and Sweden 1718-1719
This is handmade so no one is not the same, they have small differences
Length 85 mm