Bro, 377706 is the previous model of LPP which feature triple date, but I am not sure is it a boutique edition, but it's a Limited Edition launched on 2014 377714 is not Limited Edition launched on 2016, the difference are on the continuous second is red & single day & date window for 2016, for 377706 is white continuous seconds & triple date window, hope this informations are helpful to u guys
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