Original Oktava produced in Russia	Oktava from China, so-called "new revised series". These products are not related in any way to the genuine Oktava products.
supplied with manual and individual response curves	supplied without any documents
has -10 dB pad and original metal holder all original microphones manufactured after 01.01. 05 are labelled "Октава МК-012" *	has no -10 dB pad, supplied with plastic holder labeled "Oktava МC 012"
every microphone has its own serial number ** white screws	has no individual number black screws
bonding area has a dimple for effective contact silver-sputtered	no contact dimple not sputtered copper, no corrosion-protection
silver-sputtered contact-pin	unprotected against oxidation pin
_	_

* - original MK-012 microphones produced by OAO Oktava earlier can also be labelled Oktava МC 012.

** - MK-012 microphones manufactured before 2002 don't have serial numbers

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