Pushmatic ElectiCenter Panel

Just came across one of these panels being used as a subpanel. I informed client of the possible concern of the age and finding replacement “breakers”.

Everything inside appeared in good condition, nice and clean, well organized.

I haven’t found much info on the availability of parts though…

Any electrical gurus able to give me some insight on this type?

https://www.nachi.org/forum/f79/pushmatic-panel-110705/

I had no issues finding breakers a while ago.