Ekran 21a-5 (Lomo?) Microphone

I scored this guy on eBay. Realy cool capsule, i had to test it in another body, as stock one clearly doesn't work as is. Capsule is about 1cm in diameter.

Has anyone experience with these?

Back

Capsule in an ST51

Pcb front

Pcb back

Cool - never see it before  8)

Anyone recognize this pcb? Should i make some use of it, ot just ditch it, and put something else inside?

I just contacted Nevaton and they confirmed it's an Lomo mic.
They were extremely helpfull, found exact same mic in their stash and offered help with pcb and capsule if needed for a great price.  Measured their capsule for me so that i can check mine if it's up to specs.

Being a diy guy i just used good old bm8000 body.

Capsule is nice. Seems to be very rare. It has a bit weaker low end under 100hz, but exhibits almost no proximity effect, and sounds great for close miking.

It seems to be very humidity sensitive, it shorts out easily if i get too close.