The same door has been opened and shut a million times, maybe millions. How it’s held up for 40 years without needing a replacement is a mystery to Maria Pintone, the owner of Winchester’s Salone Estetica, which has been at the same storefront since 1978.One day, she says, she’s going to write a book about coming from Calabria, Italy as a 14 -year-old girl and building her life and business in Winchester.