Who knows Wipers and refills? Especially originals

This came up in another thread.
Regarding the 1970 Dart wipers linked in first post. No idea idea why the link is dead.
Here's the photos I saved. These are ANCO pushbutton.
1685548738927.png

close ups
1685548795620.png

1685548808853.png

Push the button and slide off.
1685548853563.png

Insert (aka refill)
1685548883132.png

1685548895540.png