Interior door relay
 

https://live.staticflickr.com/65535/...ed1e3ba2_c.jpgIMG_0123 by Robert Moorman, on Flickr

The black relay is from a 54, the spring is good, but the shaft is worn.

The shaft is from a 48 as are the springs, and all are in good shape.

If you are trying to rebuild one of these, you know what the other parts are.

Any of the parts $10 to cover gas to the Post Office plus shipping to wherever you are.