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Are these even Siemens tubes?

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This Post Has Been Edited by the Author







I have a pair of Siemens E188cc tubes branded Cca. The date codes don't look like Siemens codes; there are no phis on either tube.

Can anyone tell me what I have?

Thank you

Edits: 06/09/25   06/09/25   06/09/25

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