Thailand (Likely, Based On Visible Script)

American Gold Buffalo

United States · Not visible, but released annually since 2006

Washington Quarter (Heavily Damaged)

United States of America · Circa 1999 or later (based on the design style introduced for the State Quarters program)

Proba coin, Non-Circulating Commemorative

Romania · 1989

George V Sixpence

United Kingdom · 1920-1926 (approximate based on portrait and inscription)

Canadian 1-Cent Coin (Penny)

Canada · 1982-1989 (based on the presence of the 12-sided shape introduced in 1982)

10 Escudos

Portugal · 1986-2001 (based on design; specific date is on the reverse)

Lincoln Cent (Penny)

United States · 1995

2 Euro Coin (Common Design)

Austria · 2007

Washington Quarter Dollar

United States of America · 1965-Present (Specific year not visible but features common post-1964 design)

Roosevelt Dime

United States of America · Post-1964 (Specific year not visible, but fits modern clad profile)

Jefferson Nickel

United States of America · 1938-present (Specific date on obverse not visible)

50 Euro Cent

Italy · 2002 (based on image, though could be a later year with same design)

Mercury Dime (Winged Liberty Head Dime)

United States · 1943

Denmark 5 Øre (1927-1940 Type)

Denmark · Circulated between 1927 and 1940 (Specific year visible on the reverse side)

Canadian 1 Cent Coin (Penny)

Canada · Circa 1982-1989 (Based on the Machin portrait and the 12-sided shape)

Kennedy Half Dollar

United States of America · 1971 to Present (based on common cupronickel appearance)

Indian 2 Paise Coin

India · 1965-1979 (Specific year not visible, but this series was issued during this range)

Presidential Dollar - James Monroe

United States · 2008 (based on the series and common issue years for James Monroe Presidential Dollars)

Eisenhower Dollar

United States of America · 1971-1978 (specific year not visible, but this design is from that range)

Australian 10 Cent Coin

Australia · Circulated between 1966 and present (Exact year on reverse not visible)

British Half Penny -George VI

United Kingdom · 1937-1952 (Specific date not visible in image, but belongs to this range)

50 Euro Cent

European Union (Eurozone country, specifically Netherlands based on the design) · 2003

Euro Cent

Eurozone (specific country not identifiable from image, as obverse is not shown) · 2002 (based on common initial issue year for Euro coins; specific year not identifiable from this image alone)

2 Pfennig coin

East Germany (German Democratic Republic) · 1969-1990 (exact year not visible, but this design was produced in this range)

Nickel

Canada · The year is visible on the coin next to the Queen's portrait, but is not clearly discernible from the provided image.

2 Euro Commemorative Coin (10th Anniversary of EMU)

France (indicated by 'RF' on the other side, or by mint marks if visible) · 2009

Washington Quarter

United States of America · 1965-1998 (specific date not visible, but matches the post-silver era design)

100 Lire Minerva

Italy · 1955-1989 (Exact year on this specimen appears to be from the 1970s based on commonality, though the photo is slightly blurred)

Presidential Dollar

United States · The specific year is not visible in the image, but it is part of the Presidential Dollar series, issued from 2007 to 2016.

Sacagawea Dollar (Native American $1 Coin)

United States of America · 2000-Present (Specific year not legible due to blur)

Libertas (Helvetia) 10 Rappen

Switzerland · 1969

Jefferson Nickel

United States · Circa 1946-Present (Specific year not visible, but standard composition type)

5-Piso Banknote (New Design Series)

Philippines · Circulated from 1985 to 2017 (Specific year not visible, but part of the New Design Series)

Canadian 25 Cents Elizabeth II (3rd Portrait)

Canada · Circulates roughly between 1990 and 2002 (based on the third effigy design)

5000 Lei

Romania · 2002-2004 (Specific year not visible, but this type was issued within this range)

Greek Drachma

Greece · 1973-2000 (specific year not clearly visible, but falls within this range for this design)

Japanese 1 Yen Coin

Japan · Various (since 1955, year marking visible but not fully discernable in image)

50 Reichspfennig

Germany (Deutsches Reich) · Circa 1920s-1940s (exact year needs to be visible on the coin)

Lincoln Cent (Wheat Reverse, although the reverse is not visible, the date confirms it's a Lincoln Cent, and the typical composition for this year suggests a Wheat or Memorial Cent)

United States · 1961

Lincoln Cent (Lincoln Penny)

United States of America · 1909–Present (Specific date not visible in image, appears to be a modern era zinc/copper-plated cent)

Indian 5 Rupee Banknote (Mahatma Gandhi Series)

India (Reserve Bank of India) · Circa 2002-2011

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.