Parts Wanted
If there's any trim parts you're after on this machine, here is what the 510 originally had:
190050 - cloth bag
144350 - belt lifter
1920 - power cord
Keep in mind two of these three parts you'd mentioned, among other pre-1956 Kirby parts, were discontinued sometime as early as the early '60s, and according to the 505-Sanitronic VII service manual Mark Berger has, Kirby back then suggested the use of the 190058 cloth bag and the 144356 belt lifter.
The #1920 power cord, used through model 515, was still available as of 1965. However, I'd presume both that and the #192059 power cord (516-561) were discontinued circa 1980.
~Ben