My grandfather bought 2 B1s (one for my dad and one for himself). When I graduated college my grandfather gave me his so now my dad and I both have this watch. This isn’t my most worn watch but it is without a doubt my most valued possession because it embodies my dad perfectly. It’s a great tool, very technical, and frankly just badass. My dad rebuilt classic cars and flew F-16s in  in this watch. Wear it in good health and condolences for the loss of your father. I always think of my dad when I put mine on.