Quick look and both appear to be of Constantius II, and from the Siscia Mint.
The 2 Victories holding wreaths one is c. 340s and the one with two soldiers and a standard is mid 330s.
Hello and welcome!
It appears to be a "cud" - an type of error that results when part of the die has broken, resulting in that era not being stamped (and higher)
I can't say for sure but it sounds like an 1980s inflationary note, which would likely have little value, and if so, you might find a greater return in giving it to a kid who'd appreciate and treasure it.
Greece 1971 2 drachma
Morocco 1987 1/2 dinar (?)
Greece 1976 5 drachma
Nepal
S. Korea 1999 100 won
Saudi Arabia AH1379
Thailand 25 satang? (1/4 baht)
S. Korea 2000 100 won
Israel
Greece 1966 50 lepta (1/2 drachma)
Very nice 20 cash of a lesser seen type.
As for the Russian rouble - they're quite readily available - the one that sold for £3 was probably a bit on the eager side since with patience it can be had for a quid or so.
Qatar 1978
Taiwan (year 59 of the republic) 1960
China 1976
China - Hupeh - somewhere between 1900 and 1906ish (I don't have a book handy)
Japan - (year 62 of Showa) 1987
N/A
Japan - (year 15 of Showa) 1940
Greece 1984
@DFL911: Apostrophes are only used in Wade-Giles transliteration of Ch'ing / Qing. In pinyin, It is generally not used, except when spacing out words so
e.g. differentiating the two character Xi'an (The city with the terracotta warriors) and the one character xian (line/thread).
Also, low denominations notes generally don't have watermarks. A mark at the time would had been perhaps 20c (give or take), and the US$1 and US$2 have never been printed on watermarked paper.
I don't see any obvious concerns with the notes.
As for watermarks, consider that until the Journey (2001-) series, Canadian banknotes didn't have watermarks.
Those were the three that commemorated "Winter Olympics Greats"
Cindy Klassen, Mens Hockey Team, and Women's Hockey Team. All three also came in colorized versions, which were also issued for circulation.