I don't know if she is exactly rare (I am learning, please bear with me!), but all VINs match (frame, engine, transmission, etc), nearly everything is original (interior is very good, sadly one fender panel was repainted by previous owner because of some minor scrape damage), and she has just over 43k miles on her. Almost no rust. 1967 C20. A lot of these trucks were made and I am under no illusion that she's one of a kind, but she's super nice!
(Ugly canopy is now gone, we only had it on her to move it)