The heart is a simple padlock that looks great with an open loop chain like Marla Aaron's chains.  It looks great layered or worn with a nice collection of charms.  
 
*Vintage chains are sold separately in limited quantity
 
Dimensions:  20.8 x 14.5 x 3.1 mm
Metal: 9K Gold
Circa: 1980's or earlier (I believe earlier than the '80's due to the weight of this one compared to later ones that are made lighter)
Markings: 9C
Weight: 2.7 grams 
Condition Rating: 7 (has been cleaned but not polished so it shows surface scratches, hinge closes and snaps securely)