Elgin Part Number 861

These are Elgin balance staffs.  The factory number is 861, "new style". There are a couple of variations of this part though, shown here.  The neck of the upper part, to the left in this image, is a hair longer on the upper example.

The upper part is used in the grade 471 movement that I am working on today.

The 861 part come in "new style" and "old style", which are slightly different lengths.  This is a sub-variation.