18k gold plated double trombone link Albert chain. 
 
24 cm from T bar to end of clip.
 
Overall length from clip end to clip end is 46 cm
 
5 cm fob chain extension. 
 
3.5 cm T bar. 2.3 cm clip. 
 
1.8mm gauge steel core with 18ct gold plate. 
 
 31 grams total weight. 
 
 Pocket watch shown in the photographs is not part of the sale, it is for comparison purposes only.