Hello Pplater,
A wonderful and thought provoking post - I hope the discussion can, as you suggest, avoid slipping into the typical elements that lead to locked posts! I had two abstract thoughts, one on value and the other on a common theme:
1. Value: For me, value in watches represents trading a portion of my earnings for the best efforts of someone else. Value here is the belief, which importantly, is a personal one in the end, that one is able to use the fungible instrument of money to fairly trade for someone else's skill. While I don't believe in any ideology in the extreme, the thoughts of Ayn Rand on capitalism and for those not familiar, Francisco d'Anconia's speech on money and "value" ring a bell in your philosophical query. If one does an internet search on "Fransisco's money speech" you will find the full length version. Again, it's not so much the ideology but the concept of having a personal view that you have exchanged the product of your efforts fairly for those of someone else and ultimately their belief that they can perform the same trade for money (at fair value I hope) and then spend in a similar concept for other goods.
2. Common theme: Watches, like most precision machinery, are largely mechanical pieces of metal with various gears and well fitting precision parts; nothing special. What makes the magic? It's the fact that when wound our watches beat like a heart and with a life; they literally do come alive. That they can do this with high levels of precision through accurate timekeeping, gives their life a purpose. When watches break and are not fixable, they return to being lumps of metal; their value at risk until they are fixed again and restored to their accurate life beat.
All the best and thanks again for the thought provoking post.