B02-F-A60 lamps with water marks inside?

Has anyone received B02-F-A60 lamps recently and noticed what may appear to be water marks on the inside that appear to have dried?

I’ve tried cleaning these ones without success which leads me to believe this could be a manufacturing fault and given where they are installed, on a feature lamp display over a dining table, it looks odd.

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Indeed. Make a complaint. Producing a light bulb from pure material is not, after all, a technical miracle.