Glass plate holder identification

[Nas]

Does anyone recognise this design of plate holder and which camera this might fit? I’ve a feeling the brass inlaid corners might be distinctive. I can’t see a makers name stamped inside anywhere. Top quality. Notice how the slots on the screw heads all line up. I lucked out and found a few film sheaths inside. Half-plate.

 

[Matt Bigwood]

That looks like what was sold as a Thornton Pickard slide I mistakenly bought from ebay earlier in the year.

 

[Nas]

That looks like what was sold as a Thornton Pickard slide I mistakenly bought from ebay earlier in the year.

I agree, very similar but yours has indentations on the long edges in the middle. I’d say the same brand for sure.

 

[AnalogueWendy]

I have seen a Watson holder with the same 90 deg inlaid brackets/reinforcement at the bottom. Can't remember whether it had the brass at the top, next to the slide.

 

[Nas]

I have seen a Watson holder with the same 90 deg inlaid brackets/reinforcement at the bottom. Can't remember whether it had the brass at the top, next to the slide.

Thanks. You’re right. They are Watson & Sons. Well done