Hi Stig. There's a data panel and McArthur's stars added to 44-9027 here; I blew it up but not quite clear to me though I see the serial. Probably says C-54. Also an analysis of US Occupation, several mentions of C-54s but not "Bataan".
Regards
Nick
https://donmooreswartales.com/wp-con...normile002.jpg
https://history.army.mil/Portals/143...acarthur-4.pdf
Incidentally my post above is in wrong forum. I blame my age.