So it’s just called a Bracelet Chain. Description is “Chain in Sterling Silver with Tiffany Blue enamel finish.” I don’t even know what collection it is. When I saw it in the store over the Summer I was told it was Hardwear, but customer service couldn’t find it under Hardwear. It took a few calls to get it figured out. Its not on the website either. So weird.
I don't think it was part of any particular collection. It was definitely on the website a few months ago, as I considered buying it on and off for a few weeks (never did end up getting it). It's not on there anymore. They had a matching necklace (also gone from the site) and the same with black enamel.
Edit: I tell a lie, the necklace is still available
https://www.tiffany.com/jewelry/necklaces-pendants/pendant-chain-GRP10383
I can't imagine the enamel staying on for very long with so much movement on a chain. I wonder if they had issues with them.