thread: U 87 Ai vs ???
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Old 18th October 2020
Lives for gear
Klaus's Avatar
As I have posted many times in the past: Neumann does not cross-reference serial numbers and manufacturing dates, but serial numbers and delivery dates (to the respective distributor). Even in-house, that fact is no longer made clear by the personell that answers inquiries.

If you want to zoom in on the manufacturing date of any U87/A, you need to find the date codes of components, like capsule, electrolytic capacitors, etc. Or study circuit revisions, plastic color/materials used, layout of components, printing styles, etc. etc.

Without that information, my estimate: your mic was built in the late 1990s.