Identification of cable releases...

[PRJ]

I bought a bunch of cable releases recently to get the two I was interested in and two of the others are odd. One has a square thread and one is pretty large. The large one is I think a Voigtlander since it has a V in a circle with wings on the plunger. The square threaded one just says Germany on the plunger. I was curious if anyone knows what these are for? I included a regular release for size comparison.

Edit- did a quick search and the V one that is larger looks like an old Hasselblad logo.

[cowanw]

The middle one may be a Wollensak

[PRJ]

The middle one may be a Wollensak

Interesting. It does say Germany on the plunger though. I figured it was for some old shutter. Figured someone here would know.

I figured out the large one was for the really old Hasselblads.

[Tracy Storer]

The V with wings could be Hasselblad, the had (have?) a logo like that, the V is for Victor Hasselblad.
http://www.hasselbladhistorical.eu/HH/HHLogo.aspx

[Jim Jones]

The middle cable release looks like an old American standard size with a no. 5-44 NF-2 thread.