Yo, Tim.
It is a fire steel or flint striker. It is designed to have a steel bar set into it for the striking surface. I just finished making the bar and inserting it into the brass/bronze copy I picked up at the Prairie du Chien rondezvous. And Otter just had to polish it on his buffing wheels yesterday when I showed it to him (along with the sperm whale shaped strikers).
I don't know the specific history of that bronze flint striker, but the style has been used throughout the centuries. There were a lot of "figural" strikers made in Europe, India, and Asia during the 18th and 18th centuries. Such as dogs, horses, lions, men, and stylized cultural designs. Ditto all of the above for the Middle Ages - Viking era - on back to Roman times, and before. The earliest flint striker with the steel still remaining that can be positively dated was found in a tomb/burial in Afganistan dated to the 5th century BC. I is in the shape of a running lion cast is bronze, with the steel riveted between its legs.
So this style of fire steel can fit into most time periods.
It's kind of like the classic C shape. It exists in all time periods and cultures from when iron was first being worked on up to present times. There are specific variations that were in favor at specific times and places throughout history, but the basic C will still work in most any time period. Variations like: two little curls on the ends, only one little curl on one end, pronounced peak or hump in the middle of the back of the striking surface, of all round stock tapered, of square stock tapered, flat or rectangular stock, from old files or rasps, from broken knife blaces, of wrought iron that was fire case hardened, etc.
Sorry for the poor picture. My digital camera doen't do close-ups very well. These are the fire steels I made last Sunday. The bronze fish steel insert, a Spanish Colonial eslabone or chispa, two snake/fish D or J style from a farrier's rasp, and two sperm whale strikers. The Otter has already "appropriated" on of the whale strikers. Hopefully I will get something back in trade. ::
Just my humble thoughts to share.
Mike Ameling - Custom Fire Steel Maker
ps: check out the book FIRE STEELS by Cacciandra and Cesati if you get a chance. Lots of pictures - mostly of fancy strikers, but lots of good info. Also the book FIRE STEEL by Gli Acciarini - great pictures, but less info.