I just can't resist a fetter link!
 
This antique silver Albert chain has double dog clips and a sliding T bar. I think the T bar has been added, but is of a similar era, with a hallmark for 1904. The fetter links are stamped.925 every third link or so. 
 
Hallmarked for sterling silver, 1907. 
Weight approx 17.98g
Length approx 15 and a half inches 
Width of links approx 4.1mm
T bar approx 37mm
Very good antique condition, with patina. Dog clips in good order