This is my idea for the low denominations:


I am not the best artist, the circles are the Imperial Seal of Japan.
15turtles, if you could make a realistic looking version on photoshop, that would be great!
Features
Country: Japan
Years: 26-? (2014-?)
Calendar: Japanese - Heisei era
Value: 1 Yen
1 JPY = 0.011 USD
Metal: Aluminium
Weight: 1.5 g
Diameter: 25 mm
Thickness: 1 mm
Shape: Round
Orientation: Medal alignment ↑↑


Features
Country: Japan
Years: 26-? (2014-?)
Calendar: Japanese - Heisei era
Value: 5 Yen
5 JPY = 0.05 USD
Metal: Brass
Weight: 3.75 g
Diameter: 22 mm
Thickness: 1.51 mm
Shape: Round with a hole
Orientation: Medal alignment ↑↑


Features
Country: Japan
Years: 26-? (2014-?)
Calendar: Japanese - Heisei era
Value: 10 Yen
10 JPY = 0.11 USD
Metal: Bronze
Weight: 5 g
Diameter: 20 mm
Thickness: 1.5 mm
Shape: Round with a square hole
Orientation: Medal alignment ↑↑


Features
Country: Japan
Years: 26-? (2014-?)
Calendar: Japanese - Heisei era
Value: 20 Yen
20 JPY = 0.22 USD
Metal: Copper-Nickel
Weight: 8 g
Diameter: 30 mm
Thickness: 2 mm
Shape: Round
Orientation: Medal alignment ↑↑


Features
Country: Japan
Years: 26-? (2014-?)
Calendar: Japanese - Heisei era
Value: 50 Yen
50 JPY = 0.55 USD
Metal: Copper-Nickel
Weight: 10 g
Diameter: 33 mm
Thickness: 2 mm
Shape: Round
Orientation: Medal alignment ↑↑


Features
Country: Japan
Years: 26-? (2014-?)
Calendar: Japanese - Heisei era
Value: 100 Yen
100 JPY = 1.10 USD
Metal: Copper-Nickel
Weight: 12 g
Diameter: 35 mm
Thickness: 2 mm
Shape: Round
Orientation: Medal alignment ↑↑


Features
Country: Japan
Years: 26-? (2014-?)
Calendar: Japanese - Heisei era
Value: 500 Yen
500 JPY = 5.50 USD
Metal: Silver (.300)
Weight: 10 g
Diameter: 26 mm
Thickness: 1 mm
Shape: Round
Orientation: Medal alignment ↑↑



