When I first started buying watches, I used to attach sentimental reasons for the purchase (probably to justify the cost). This means I have a load of watches I hardly wear but probably won't sell!
2007 Longines Master Collection,
2009 Breitling Chronomatic 49
2011 IWC Aquatimer 2000
2012 Bremont ALT1-C
2013 Rolex BLNR (I did sell this but bought it back)
2014 Rolex 116600
2016 Breitling Aerospace Evo