Just purchased some Russian PIO K-40Y-9 caps, 1000V .22uf from fleabay.
What actually arrived is physically stamped K75-12, an inquiry has recently been sent to the seller (who had great feedback BTW)with no response yet.
Would any members be able to shed some light?
Google searches has not provided any additioanal info, in fact there does not really seem to to be a model K75-12.
Physically they appear identical to the K40Y-9 with the siver can and sealed ends etc.
There is not exactly a lot invested here so no biggie, but would be interested in more info.