At some point I got curious about the real price of old coins.
I
eventually found https://coininvest.com.ua/chervonets-skilky-tse-naspravdi-povna-istoriya-vaga-zolota-nominal-i-suchasna-tsina/
online.
It was hard to find practical information. Most sources were unclear.
I learned the real price and history of the chervonets.
On this page I found practical knowledge.
I found it very useful if you’re interested in coins, gold, or real asset value.