Manufactured in 1960 this Model 7/B5 is in excellent used condition. I would rate it an 8 on a 1-10 scale with 10 being mint. When I found it a young lady had purchased it with intent to learn to play. She stated that the person she bought it from had just stored it for many years. When I first started playing it, it seemed stiff. But now it is loosening up nicely. Diamond accordions were built in Italy by Morbidoni. This would be considered upper mid-range accordion for advanced students. The tuning is A-440hz.