SULPHUR, La. (AP) — Commemorative medals honoring Sulphur's centennial have gone on sale.

Mayor Chris Duncan tells The Southwest Daily News that an initial minting of 300 coins has been completed and they can be purchased for $20 at City Hall.

The nickel coin, depicting a likeness of sulfur mining pioneer Herman Frasch on one side and the city of Sulphur logo on the other, measures 2 1/2 inches in diameter and a quarter of inch in thickness.

Coins numbered 1-10 are being held in reserve and will be auctioned off at a later date, the mayor says. The remaining numbered coins are available on a first-come, first served basis, Duncan says.