Bullion Buffalo Design Bar from Silvertowne. Each Bar is 5 troy oz. 1 – Silver 5 oz. Silvertowne Bullion Buffalo bar. Customers will receive Silver 5 oz. Silvertowne Bullion Buffalo Design Bar. 999 fine silver and minted from SILVERTOWNE. Hours – Nights & Weekends. We try our best to reach each customer in a timely manner.