Antique Vintage Marked BB 1-20 12k Gold Filled Oval Link Bracelet
Measures approx 7.25" long when open 9/16" wide and 5.3mm thick.
Weighs around 13.6 grams in total.
Marked with "1-20 12K" & "BB".
The clasp works well. 
Overall in great condition with normal wear.
Please see all the photos for the details and condition. They are part of the description. Thanks.

Please note that the item is 12K gold filled, NOT 12K solid gold.