It can be somewhat pricey, send concepta a PM, but I think you'll be surprised.
And if you ever need to sell it, just send me a PM, I'll take it off your hands.
My advice would be make sure the porto chrono is what you actually want before you invest in a concepta. he can also get genuine movements for 3719 and 3717. Both are awesome watches, but not as in need of a quality movement to be a daily wearer as the 3714, due to the Sec @ 6 kiss of death.