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Graham,
I have had, and have a few Baader 1.25" and 2" filters - nil issues. I cannot say the same for Astronomik... I got one from a "respected" Australian dealer, that had been opened, and there was an obvious finger print on the filter. Sent that back very quickly, got my sealed replacement, and never shopped with them since.
Gary just got unlucky. A statistical outlier.
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