Kirby 505~D80 carbon brushes...
Hello ??? (cousineddy).
The 'current' (pardon the pun~lol) brushes we get from the company are stamped with "hg22" on them. This can (& has) varied over the years, & depending on the supplier used, (especially right now with the supply chain issues).
And to answer the second part of your question, without seeing the 'other' brushes, it's hard to say whether they are the same or not?!?!?!
Also, 1CR brushes are not the same as the older models. That changed to the rectangular brushes (larger) in 1970.
I hope this clarifies things.
If you (or anyone) have further questions about this or other Kirby questions, don't hesitate to ask.
Cheers & hagd/n all,
Bill
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