I recently acquired a .22 cal six-shot revolver, it's been in the family for years. It's a model TA76, with "ARMIFLLI TANFOGLIO GARDONE, V.T. ITALY", stamped on the left side of the barrel. The cylinder doesn't tilt out to the right to reload, you have to load it one round at a time. Can anyone enlighten me on an approxiamate age of this pistol?