The United States Of America

100 Rupiah Banknote

Indonesia · 1984

Qianlong Tongbao (乾隆通寶)

China (Qing Dynasty) · 1736-1795 AD (Qianlong Emperor's reign)

50th Anniversary of the Kniefall von Warschau

Germany · 2020

5 Yen Coin (Gonen)

Japan · Shōwa 44 (1969)

1 Baht - Rama IX

Thailand · 2525 BE (1982 AD) or later (dates typically in Buddhist Era)

Unidentifiable Rowing-theme Bi-Metallic Coin

Undetermined (could be any country that issues bi-metallic coins with sporting themes). · Undetermined (modern era, likely post-1980s based on bi-metallic nature and general appearance).

State Treasury Note of the USSR

Soviet Union (USSR) · 1961

Greek 2 Euro Commemorative Coin - 10th Anniversary of Economic and Monetary Union (EMU)

Greece · 2009

2 Euro (Greece - The Abduction of Europa)

Greece · 2002

10 Centavos (2nd Standard Series)

Brazil · 2022

Brazilian 1 Real Coin

Brazil · While the specific year is not clearly visible in the image, this style of 1 Real coin has been issued since 1998.

50 Euro Cent

France · Likely early 2000s (exact year not visible, but design is from early Euro series)

Soviet Union 25 Rubles State Treasury Note

Soviet Union (USSR) · 1961

1/2 Franc

France · 1963

2 Euro Commemorative Coin - "Architecture and Urban Planning"

Finland · 2020

Denmark 25 Øre (King Frederik IX)

Denmark · 1970

French 20 Euro Cent

France · 1999

Spanish 2 Euro Commemorative Coin (Don Quixote)

Spain · 2005

Greece 1 Drachma Constantine II

Greece · 1968

2 Euro Commemorative Coin - Don Quijote

Spain · 2005

5 Romanian Lei

Romania · 2019

5 Bani

Romania · 2014

20 Euro Cent

Italy · 1999 (First year of issue for Euro coins)

500 Rupiah coin

Indonesia · Based on the design featuring the Rumah Gadang and '500 RUPIAH' text, this coin is likely from either the 1991-2003 series or later variants. Without a clear view of the year, it's impossible to pinpoint the exact year, but this design was prominent during those periods.

1 Gulden (Queen Wilhelmina)

Netherlands · Based on the visible portrait of Queen Wilhelmina, the year could be anywhere from 1898 to 1945, as this design was used for various denominations, including the Gulden, during her long reign. A precise year cannot be determined without seeing the reverse side or a clearer view of the obverse date. However, the visible inscription '19' suggests it is from the early 20th century, possibly '190X' or '191X'.

500 Lei

Romania · 2000-2004

2 Euro Coin

Spain · 2021

10 Penniä

Finland · 1973

One Cent (Maple Leaf design)

Canada · 1910

20 Euro Cent

Italy · 2002

Ancient Greek Tetradrachm (likely issued by Athens)

Ancient Greece (specifically Athens) · Circa 5th-4th Century BCE

Byzantine Skyphate (Cup-Shaped) Trachy

Byzantine Empire · Circa 11th - 13th Century (Middle Byzantine Period)

500 Rupiah Banknote

Indonesia · 1982

5000 Lei

Romania · 1992

1 Pfennig

Germany (Federal Republic of Germany) · 1991

Olympic Games Rio 2016 Commemorative Coin (Judo)

Brazil · 2014-2016 (This particular design was likely issued in 2014 or 2015, as part of the phased release leading up to the 2016 Games)

20 Euro Cent

Italy · 2002-Present (exact year not visible)

2 Euro Commemorative Coin - Treaty of Rome 60th Anniversary

Belgium · 2017

100 Francs

Djibouti · 1991 (based on common mintage dates for this design)

2 Stotinki

Bulgaria · 1988

Newfoundland One Cent George V

Newfoundland (British Colony/Dominion) · 1929

Brazilian Real (Standard and Rio 2016 Olympic Commemorative)

Brazil · The standard 1 Real coin's design was introduced in 1998, but the specific year of issue for the coin on the left is not visible. The commemorative coin (right) was issued in 2016.