I have these in various sizes and weights; very popular in the UK. This is a medium chain from 30s/40s. Same type chain as used on a man's watch chains - not marked but I guarantee to be silver. The heart is the closure - opens by moving the lever, it also has a safety chain. I estimate this will fit up to an 8 inch wrist. Chain width 1/4 inch. These locks never had keys!
**NOTE: boxes, stands, and any additional props used for enhancing my listings, are NOT included. If any of these are included, it will be clearly marked. If you are in any doubt, please ask!