Have to assume this is a 300 Sport model, not a 300H Letter Car. The problem with the '62 Sports has always been that the customer in the showroom, as I recall, could literally check every necessary option box to get all that the H -car package came with to begin with. From the text and pictures we at least know it has the front swivel bucket seat and he says it is a 413. How helpful would an engine photo be? Block better be stamped with "41" because the Sport came with a "38" for the standard 383" engine.
It may have a single 4bbl or dual inline 4bbls or even the 405HP short-long ram setup. A VIN would be a starting place. But the FREE documentation available by sending that VIN and proof of ownership to Stellantis Chrysler Archives would give the car valuation. Until then its just some old Chrysler, but at least a coupe.