I have recently renovated a couple of signal torches. The one on the left is Canadian with a conical shroud and push on colour filter. The one on the right is British and usually comes with a similar cowl and filter to the one on the left. This example however has a three colour rotating filter with a mesh dimming cover. I haven't been able to find out any dates or info on this type and no pictures of one in use.
Does anyone recognise it?
Many thanks, John
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