Terreni told HODINKEE link an interesting story about the chain. A pocket watch chain should be an organic part of the watch, and when the watch is actually being worn it has to drape in link a natural way. Michel Parmigiani's testing process for the chain was simple – he held it up over a table (I assume with something soft underneath it!) and let link it fall. The chain coiled naturally as the links relaxed onto the table.