The Vianelli family member who now runs the shop in Brescia is an acquaintance/friend of mine. We have not met in person but have communicated quite a bit over the years. I met his father during a past visit.
Their website can be found here:
BICICLETTE E ACCESSORI - VENDITA ONLINE - BRESCIA
They are located just to the East of Milan in Brescia.
Your frame is mid-80's vintage.
They did some third party frame building, including for Marinoni in Canada