We added info on our website where to find serial numbers on most of the popular brands, we kept getting phone calls "where do I find this serial number you say you need?"

For example, Hyster page has photos where to find the serial number, etc
https://intellaparts.com/blog/hyster-forklift-serial-number/

Other brands here

https://intellaparts.com/blog/forklift-resource-center/resource-how-to-articles/resource-forklift-serial-numbers/