Parts to repair Sunbeam toaster?

Hope you can help us?
We have a trusty ole Sunbeam "SERVICE AT-W" toaster in need of repair.
The part that's failed is the part that controls the lowering and release of the toasted bread lifter.

Can you help us get the part or do the repair for us?

We've been through 3 new "American Brand Named"but Chinese made toasters, they are all junk!
This sturdy 35 year old toaster was made by Sunbeam in their Chicago plant and can't be replaced by anything made today of even 1% of its quality.

Thanks for whatever you can do for us.

JB