Ramo Secco dried leaf pattern half-bar found in Chiusi c.1870 and 50 pesos atop a Roman galley USB silver kilogram heated drink coaster — great electrical conductor – with £2 coin and a penny for scale. Never in human history has someone made a 32 ounce solid silver USB powered drinks coaster. I'll bet on it. The ancient coin (ramo secco bar) in this first pic justifies its place here in the ancients section.