Looking for replacement crank operators and latches

Hello,

I'm looking for replacement crank operators and latches for a bunch of 1960s metal-frame single-pane windows.
I'm attaching photos showing every measurement I could get my hands on, since I cannot find any brand or identifying information on the parts :) I have tried the "universal replacement" operators available at Home Depot and they work okay, but they are poor quality and seem to strip very quickly, so I'm looking for higher-quality, more durable replacements more in keeping with the original hardware.

For the finish, if that's an option, I'm not interested in matching the existing finish; a dull brass, a dark brown, a dark/oil-rubbed bronze... anything along those lines would work for the current application.

If you need more info, I'm standing by to provide it-- thanks in advance for your help! :)

Wow, I think you nailed it! Thank you!!

One last question-- I need to end up with a much darker (aged brass, not silver) finish to match the original installation-- do these parts come in any other finishes, or could I use a metal primer and spray paint to finish them, or... what would you recommend?

Thank you, again!