Vintage metal coaster or small tray for Burtonwood Best Bitter beer.   The item features the branding for "Burtonwood Best Bitter", a beer associated with the Burtonwood Brewery Co. (Forshaws) Ltd, which was founded in 1867.   The text "B W" and "1867" are visible within a red and white logo at the top of the coaster. The primary colors are green, red, and off-white/cream.  The brewery was based in Burtonwood, Cheshire, United Kingdom.   
Great addition to any collection.  
Measures approximately 8" in diameter at base.  
Great used condition, a few scuffs and scratches. See photos.