500 rubles 1997 modification 2010, series-ghost EP, UNC banknote without circulation

The EP series, as well as 5 more series with a supposedly "dissonant" sound, have not been printed on banknotes of Russia and the USSR since 1957. At the same time, the letters E and P were used separately in the series to address in combination with other letters. It is unclear as a result of what failure, a series of EP appeared in 2020, why it was not withdrawn and went almost unnoticed. After its appearance, the series with the letter E stopped being printed, and 500 rubles continued with the YAA series, and the numbering of the" secret " number on the banknotes began from the beginning, although it should have continued with 7 or 8. More about this in the video. Other" non-existent " series did not appear in any other denominations. The secret numbers on the subsequent 500 rubles banknotes indicate that their appearance is not provided for by the position on the sheet. The full list of the series of "ghosts": EP, EP, EP, EP, EP, EP in any dimensions of letters.