Need help Identifying This Feathering Prop

[MCOS]

Any idea on the manufacturer of this feathering prop? Or any hints on installation? It has a bronze pipe threaded into the internal shaft gear block. This pipe/tube is fitted over the drive shaft and to operate the tube must move forward or back. I am not sure how the tube should be fixed in relation ship to the shaft, possibly with a collar on the shaft to limit how far it allows the tube to move or a spring arrangement?

[Orion Jim]

A Saab controllable pitch propeller perhaps.

[MCOS]

Good candidate. Not what I had thought it was. Thanks for the info.

[fourlyons]

I helped rebuild a Sabb once, it didn't look like this one; maybe this is a different model?

[MCOS]

Open to offers if any one can use this

[fourlyons]

This is the Sabb....

[Orion Jim]

Archiwa: combi-wal-sruba » Jacht i Bałtyk

Here’s one.......

[Mplight]

My mate over at AB marine: Geoff Prior- he knows Props!

“that is a very old unit, it is the Hasselforth, but I don´t know if I´ve
written the name correct. It is a very very old unit, these propellers
disappeared a long time from the market”

[Shrew]

Originally Posted by Mplight

“that is a very old unit, it is the Hasselforth, but I don´t know if I´ve
written the name correct. It is a very very old unit, these propellers
disappeared a long time from the market”

Hasselfors

Hasselfors made a "Foldomatic" which that is NOT. I'm not saying it's not a Hasselfors, but I couldn't find any hits for Hasselfors that looked like that. Again, that also doesn't mean it's not.