Brake cable clips

1st version. horse shoe shaped (open) "c".  very rare. I have ever seen only 2 sets(one is mine) .

2nd version. horse shoe shaped (open) "c". early-mid  1950s.

3rd version. normal(closed) C. mid-late 1950s. soory bad photos. This clips put on my bike.

Unusually model. oppisite bird wings!!. No letters on side. I have ever seen only 1(mine).

material was changed from STEEL to STENLESS on circa mid 1970s.
The way of bolt and nut became reverse. on circa 1962-63. (Pre) bolt is left  and nut is right.(Past) bolt is right and nut is left.