Old shocks - knee action the right term?

[malpais]

I have about a dozen old shocks. I don't know how to identify them. They are NOS or NORS - surface rust from hanging in a barn for years, but still have some paint on them in some places and not pitted, and seem to work like new.

They are all Haudaille style, but have several different arms. I tried to give them away with no luck, so guess I'll try to ID and sell them. I'm attaching a photo of two of them. I found a chart with some Haudaille shocks, and the one with the long forged (cast?) arm looks like a Lincoln and the one with the flat bar arm looks like a Studebaker. Any ideas?

I may post more photos if anyone has info.

Thanks,

Gordon