What brand are these mirror blades for?

[Pharoah007]

Are these for a Stern, Williams, DE, ect?

They are a bit scratched up, but I got em for $5 USD at Allentown.

Thanks in advance.

20240505_144409 by Z R, on Flickr

20240505_144416 by Z R, on Flickr

 

[Pharoah007]

Bump. Anyone?

 

[shinynick]

They look like Stern mirror blades, the WPC ones have the "steps" shape at the rear