At the time, I checked the precision of the parts' installation before purchasing. I have opened the item, but it has been stored in a box in a cool, dark place, so I think the condition is good. It's from about 20 years ago, so the outer box may show corresponding signs of aging. I checked it during the photography and I don't think there are any noticeable scratches or missing parts, but this is just my personal opinion, and there may be overlooked dirt or scratches on parts that rub against each other. Please understand that this is an opened and used item before purchasing. Please purchase only if you understand that this is a privately stored item. Please be sure to ask any questions before purchasing. Also, to prevent tampering, returns and exchanges are not possible after purchase. If the weather in the shipping area is bad, I cannot ship the item. Thank you for your understanding.