We have a source we have utilized since 2005. Below are some examples of the coins made by them.

South Korean Made
SOUTH KOREAN MADE CHALLENGE COINS
We also Custom Challenge Coins made in South Korea. Here are a few quick options. More detailed quotes can be issued sales@coinable.com
Easy online checkout to include shipping, die fees, setup, artwork, etc.
Choose from the following metal FINISHES for South Korean Made Challenge Coins:
Antique Bronze
Shiny Bronze
Antique Brass
Antique Copper
Antique Silver
Shiny Silver
Antique Gold
Shiny Gold
Nickel
Antique Nickel
Black Nickel
24K Gold plated
FEATURES:
3D stamping
Photo inset
Epoxy
Numbering
Sandblasting
Two Tone Plating
Grinded Lettering
EDGE:
Wave Diamond Cut Edge
Swirl Diamond Cut Edge
Weave Diamond Cut Edge
Reeded Edge
PRESENTATION:
Velour Pouch
Plastic Capsules
Velveteen Box
Coin Sleeve

South Korean Made – 1.5″ – Custom Challenge Coins
South Korean Made – 1.5″ – Custom Challenge Coins
1.5″
Your choice of metal finish

South Korean Made – 1.75″ – Custom Challenge Coins
100 coins
1.75″
Your choice of metal finish

South Korean Made – 2″ – Custom Challenge Coins
South Korean Made – 2″ – Custom Challenge Coins
2″
Your choice of metal finish

South Korean Made
SOUTH KOREAN MADE CHALLENGE COINS
China made Custom Challenge Coins
Taiwan Made Challenge Coins