I picked up a small Wray Lens. Its marked "Wray London 5 x 4 No 682". It has a slot for Waterhouse Stops and no sign of modification although it might just have been very carefully modified I suppose. First try on camera (I use high density foam board as a trial lens board) suggests that its reasonably wide although I haven't attempted to work out the FoV. But the serial number is quite low so I'm wondering about its date of manufacture. Any suggestions or are there any Wray serial number resources I haven't managed to find?

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