15.
Matches come in boxes of 50-60, never the same number, just as many as fits into a matchbox.
FM radio band in USSR was on lower frequency then in the West, 66-74MHz. When I was a kid I had a tuner that was so old that it had meters on dial. On my FM tuner the lowest frequency is 88 - it's the frequency of Arsenal radio in Moscow, that's why I know it exactly.
No idea about VHF, I have a Toshiba multisystem (PAL/SECAM/NTSC) TV made for Europe, and on old Soviet TVs there were 12 channels tuned manually by a technician, plus unknown number of decimeter wave channels sometimes. Newer transistor TVs from the 80s had 3 bands for each of 6-8 buttons selected by jumpers and then wheels to tune without numbers.
Standard Russian playing cards have a logo on an ace of diamonds. I answered that one right, just remembered my last game of preferance with a Chinese deck bought on a railway station at night.