EDT270

Hello all, hopefully somebody can throw some insight my way. I have come across a box labelled "Marmon parts" from my grandfather, who has unfortunately passed. Inside seems to be a full set (as far I can tell) of door handles and window cranks. He restored a 1929 Marmon Model 78, so I assume the parts are for that, however I do not know for sure if this is true or if they are interchangeable with other cars. I also wonder if they are original or reproductions, as I haven't been able to see any markings on them and they are quite crude by modern standards. I know someone could use these for their car, and am curious as to the value. Thank you for your help. Everett