As discussed before. I agree it's a very rare and special watch. No question that all parts that build this watch are genuine and original Heuer...indeed not to confuse rarity and value. While I am sure it will sell for strong money, I'd also put my money towards 1st.gen Autavia right now. What intrigues me most about this proto is the movement. I have been looking for one to use in one of my own projects, without succes so far. The difference in sound/ticking of the higher beat is so special. Attached a small detail from another "prototype"
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