The upper cue dome is a pattern I have not seen before, it is simpler and could be of local manufacture.
The lower one is what I would call a standard one, at least as standard as these things are. Picture of one of mine showing the, "easy to snap off legs"! Yours lower one has engraved numbers mine have plastic stick on numbers.
Also attached is a picture of a Pye Mk7 camera with a very similar cue dome, this one has a metal skirt that attaches with a push & twist movement. There were endless variants. Some cameras used a car rear light glass as the official cue dome.
Regards
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