Kubota serial number 53159 is what year?

This is a scam. A person is advertising Kubota tractors on Buy/Sell (and possibly other sites) and when you ask the serial number they give you 53159 or 35519, or some other permutation as they are too lazy.

These tractors are typically advertised for $15K less than market value. They are telling you that the payment will be handled securely through eBay, even though it is not sold through eBay (???).

5 digit serial number are not even valid for models in 1997 or later.