From publisher:
This promo pack is for 15 metal red $5 coins for use in Scythe. If you have the 80 piece metal coin set for Scythe, you do already have $5 coins included. These are an optional promo item for people who want the $10 coins to be more distinguishable from the $5 coins. These red coins are a different style, with the color being red acrylic over metal as opposed to red metal.
PLEASE NOTE: This is a new promo pack. It did not come with any of the Kickstarter versions of Scythe, nor the retail version of Scythe.
Link BGG