Mystery 8x10” metal film back with bale arm.

[Lachlan 717]

I’ve had this for a long time, thinking it might be good to make a camera around. I even have a NIB Sinar bellow ready to go with it.

Just don’t think I will get around to it, though, so was hoping to ID the brand.

Absolutely nothing branded on it.

It’s very well made from aluminium and has a very nice GG.

My searches on Googling Images have been fruitless, so wondering if anyone recognises it and can name the camera?
237024
237025
237026
237027

Thanks!

[Tin Can]

Maybe C1 Calumet. I have several

Some early have 4 bolts. Later has 2. Need better pics

[domaz]

Exact outer measurements might help. It actually looks a bit like the back on my Gowland 8x10 camera which is black and has a similar bail. I'm not sure if Peter Gowland made his own backs or used backs made for some other camera though.