The Silver Squirrel has dated this piece to the 1910s.
I would ate them to c1910. They are highly sprung and in good working order. They are in superb condition being free from dings splits distortions and repairs. They measure approx. 9 inches (22.8cms) long by 1.5 inches (3.8cms) across the widest point and they weigh an impressive 156 grams. Super quality examples.
The Silver Squirrel has dated this piece to the 1910s.
You can view the stock and full dealer information on the The Silver Squirrel Profile Page