Vintage England Brooks Brothers Pewter Clear Bottom 12oz Tankard Stein Mug #586

This is a vintage, previously owned and used pewter mug with a thick, clear glass bottom. The bottom states "Made in England for Brooks Brothers Est. 1818" as well as "309-01-4077" and "586 12oz". It has obvious signs of previous use, age, and storage such as marks, scratches, and discoloration but there are no dents, breaks, or glass chips/cracks. It measures approximately 4" tall with a 3" diameter opening. The bottom has a 4" diameter. Ref no 30033