My 1973 corvette vin

Why does it seem wrong?

Thanks Tom!! I bought a barn find , actually an abandoned one sitting for 20 plus years in a garage. It has only 35k miles but in real bad shape . I only paid 3k for it and was told it was a 1973. After now looking at what you sent me the car is a 1977. Thankfully I was able to back out and get my money back. It's just too much work for a car that I feel isn't worth it. I have no interest in a corvette after 1973. Thanks!!