Unusual peice of unknown origin, i am in no way  saying that this is an Original 17th century item , let's just get that clear. 
I have been a Tool collector of all types for over 35 years and I just cannot remember how i acquired it. 
 
It is very Odd because I just can't think of any application where this tool would be of any use ,(apart from Pricking, )and i dont recall where I acquired it or when ?
 ( I am getting  on a bit ! )

The handle is Horn i think , it doesn't really look like any wood I've seen before. 
The Ferrule is Brass and the Pricker Guide is Copper with a large amount of Brass content. 
The Cap on the base of the handle is Brass aswell. 

I did open it up a few years ago , i seem to remember an old handmade spring . It is Entirely up to you to interpret your own opinion about its use . It is Old and obviously hand made . ( I wouldn't go smaking it with a hammer or chasing poor old women around is my point . ) 

As a Collectable or Original of possible dubious Origin and use , do be careful with it, PLEASE. !
As a Strange Collectable it would be good addition , but if you believe in it then , treat it with the respect it may deserve as a peice of our terrible history .
James 1st  , Hopkins and Sterne...a dreadfull and shamefully backwards people of awful prejudice .

Please Study the photographs carefully as they are part of the condition report and thank you for looking. 

This is for ornamental purposes only.