1960s or 70s no rust or corrosion in excellent condition and plays as new.  Wax is perfect. No signs of warping, moisture etc. The condition of the straps, bellows and overall condition is better than average. As with anything new, there are light superficial scratches only visible in very bright light but no cracks, dents,deep scratches.  The compression is very tight. There are no leaks, sticky keys or issues and as far as I can tell it does not need tuning. . There are no musty odors and the accordion was stored at normal room temperature.The reeds and leathers all look excellent. I think you will be very happy with it.  The keys are large so you could call it an adult size or full sized accordion. It has 120 basses and 41 keys.The reeds are LMMH so it has a mild musette and nice bass reeds on the treble. Weight is about 25 lbs.  The keyboard length outer white key edge to outer white key edge is 19 1/4  inches. Comes with good
original  hard case. Buyer pays shipping charges. If you have been waiting for a safe good instrument to come along, this may be the one for you.  Made in Italy, considered one of the better accordions made.