Building a forecasting model was introduced to the thread by
@shishy. The goal of this thread was to understand something much simpler.
1) Do vintage watch prices come down once they have started to trend up?
2) If so, how and when does that happen? Is there something that can be learned there?
3) If one buys an original vintage watch (whose price trend is on the way up) at fair market price at the time, how likely is it that the watch will come down in value in the future?
I was thinking about two watches over the last week that really sparked this question - vintage speedies from the late 60's and the Yema Yachtingraf.
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